True damage on everyone.
I feel that there are a lot of champions in the game right now that just... don't need it.. like at all. I feel that with all these champs with true damage it makes the game less rewarding as a whole. like lets take 
and 
for instance. darius has built in pen, a passive that procs black clever almost immediately and really high base damages. his kit is REALLY good at making armor useless on its own, for what purpose does he need a true damage execute? as for fiora, i cannot TELL you how many times i've seen a fiora come back from a shitty laning phase just due to some lucky team fight. the fact that she can get reasonably tanky while dealing true damage makes it feel like there really isn't anyway to shut her down. like her dueling potential in lane isn't bad enough to justify being able to just come back swinging with such a strong late game. It makes it feel like if you get behind fighting fiora, then you're just fucked. but if you're ahead of fiora its only a matter of time before she two shots your adc. the same can be said for 
and even a champ i legit like 
i've lost plenty of lanes as garen but then just come back cause of that dumb passive. it makes my victory feel extremely hollow because i know that mechanically i failed but the game is just randomly giving me a cushion. I also feel like laning phase and bully potential was waayyyy too good to warrant him having true damage, max hp damage as magic or ad? sure fine, at least you can build against that. irelia has the same problem as fiora, i feel her laning phase isn't bad enough to justify her having the ability to just spring back in the mid game.
TDLR
i feel that all the true damage that certain champions have makes it feel like pissing in the wind if you get ahead or makes it so the champ has a laning phase so oppressive you can't really do anything about it.
<-- only when he procs his ult tho 
all deal true damage (only like 1) because of their ults/walls.
's 1000 true damage ult. On a relatively low CD. Sitting under tower as ADC at full HP and suddenly...NOM NOM NOM NOM. 1 shot and gray screen.
his autos slow, with a simple 
W auto combo you're now slowed and silenced so landing Q will be a breeze, and because his ap ratios are crazy high as well as base damages he's probably gonna kill you.
which is fully proced almost immediately from his passive plus built in 25% pen, thats half of your armor just down the drain.
only have AD damage for the most part with not built in pen. because of that it creates a sort of ticking clock kinda deal where if you want to be half as useful as the opposing top laner you HAVE to do well early because your opponent can rush armor and heavily reduce your snowball chances where as darius has built in pen and true damage so its not as much of a factor. i don't think he should be completely useless but a reset true damage ult that allows him to get an ez triple is a lot more than he needs.
or 
are all viable ranged champions that SHOULD do well against him. however the simple fact that he has his passive and his ult means that even if bully him through out laning phase one good team fight is all he needs to be useful. for a champion with such simple mechanics and strong laning i feel that its far too rewarding. if you're gonna play a champion thats as simple as 
or with the keystone storm raiders surge, his ability to get into fights is way better. not to mention while not being able to get at the back line easily darius is extremely good at destroying the frontline with his passive. so all it takes is one 
tanking one too many hits and darius now has his passive up. the only reason i've ever cared about that pull is because it makes him nearly impossible to deal with if you're not particularly mobile. even if you do have an escape that grab can negate it if he times it right. and its not like hitting a point blank cone move is particularly hard.
that gives you 200 bonus AD if you just brought 20 Ad from runes/masteries. that allows you to do 11% true damage with just your passive and allowing you to get 
and the boots of your choosing as defensive items. you deal almost as much true damage as 
while having that notorious W and the way tankier base stats to boot. thats a pretty tanky fiora with a decent amount of damage if you ask me.
or something 44% of their hp as true damage plus your dash, plus your E should probably be enough to kill them. not to mention every hit is reducing their armor as well as Maw's pen. and with this build your hp would be 3k assuming you're around level 16. plus the resistances plus the empowered heal from visage, + life steal and assuming you didn't blow your W on something stupid i have literally no idea who is going to burst you down that quickly. you're a top laner so that means you have a mid, adc and jungler that could all very well be high damage threats and most likely are if this is solo que because everyone and their mother is trying to carry the game. if you're bursted down THAT quickly with this build then you probably just didn't get the heal off or got caught out.
but thats just because she's EXTREMELY strong at the moment with her E buff. and 44% is NOT your only damage thats just preposterous you will have plenty of damage to burst a carry. your total bonus AD with this build would be 200 and your Q at max rank has 105 plus 115% bonus AD thats 335 damage with just one dash as its base damage, not even factoring in pen or the passive, your w's base damage is 250, and your E crits and your total AD for this build at max level would be 316 thats 632 for the crit at max rank. thats 1533 damage in total not factoring in pen or amor reduction or your passive. the average adc's base hp pool is 1800-2000..... are you really trying to tell me you're not gonna kill them? thats not even thinking about auto resets with hydra or the bonus damage on autos it offers. like wtf how are you NOT going to kill them if you get all procs of your passive off? the math literally isn't there. fioras numbers are fucked dude. and for all that damage you would have 3k hp and 133.5 armor if you didn't get ninja tabi if you did then its 158.5. who in gods name is going to not only survive that full combo but also burst you down?
and sure the E isn't lock down but its fine for catching up to people and on a 5 second cd its slow should be more than enough. your W is on around a 12 second cd with this build so that's good for 2 per team fight i would argue. while yes its true that you'll have a hard time catching 
or 
the same can be said about most champions. i would also argue that fiora has a much better chance at catching them than other top laners or champions in general. her mobility is EXTREMELY high and thats part of the reason why i think her kit doesn't need true damage, she has shit tons of mobility but makes no sacrifice for it, she has plenty of damage, her stats are naturally tanky, and she provides okay utility with her heal.
on your team as well as that fiora that team fight is going to go south for the enemy team because they didn't keep those damage sources in check. and team fights last MUCH longer than they once did, with tank yas, tank ekko and just tanks in general being really viable, team fights last an eternity. and yeah its not maxed out before 18, but i'm talking ABOUT her level 18. thats the primary reason i hate fioras kit, her design is around dueling and outplaying opponents to snowball. you are given everything you NEED in your kit to succeed in this. if you fuck that up, even when you were set up to succeed. you should be punished HEAVILY for it but you get this cushion of a late game instead which i feel makes fighting her feel unrewarding and playing her hollow because no matter how much you fuck up, you will always be useful, it creates a champion that has all the reward with none of the risk.