Flat vs. % penetration is becoming more and more of a choice between "kill squishies" or "kill heavies", but runes don't necessarily let you play around that. They only allow the former option.
Would it be possible for us to get runes that give us small amounts of % penetration? Or would that be completely busted?
Carnarius4 votestanks armor may be lowered from 300 to 100 while only having lw and black cleaver (which in my opinion is completely ridiculous), and you guys want even more penetration
Omnipherious1 votesI would say Flat Armor Pen may need to be looked at, but the items like 
are alright. BC doesn't apply all of its' reduction from the time you buy it, you have to stack it up; and the LW line affect Bonus Armor, which is undoubtedly much better for tanks than Total.
Flat ArPen runes and items might need some tweaks, sure, but I genuinely think the problem isn't so much with penetration items at all. Seems more like Riot needs to do a full pass on champion armor levels.
Since they've already started going down the route of bonus armor penetration, which I think is the right move since you can stack way more armor than MR, we now need to have some champion role and armor value consistency.
Go and look at the list I've linked.
Is there any particular reason Viktor, Swain and Cassiopeia have 90 Armor at level 18? Or have +4 Armor per level? Like...what?
Kennen, Teemo (both 24.3) and Soraka (23.4) start with 4-5 more Armor than Azir (19) and have more than a whole 
by level 18; Kennen, Teemo, Soraka (88), Azir (70)
Why does Mord, a giant metal man, have 20 base while Talon has 26.8 in assassin's robes?
They've done a pass on mana regen before, and a small one on resistances when they adjusted Level 1 values not long ago. It is about damn time we got some stat consistency.
Canidae1 votesIf they give % armor pen, they sure as heck should also include % magic pen, % magic resist and (most importantly) % armor.
darkdill1 votesEhh, we already have AR/lvl and MR/lvl. %AR and %MR would be pointless.
Canidae1 votesWould rather have limited edition version of the current runes than new ones really.
BluePolarizer1 votesWe do have %armor. It's terrible.
MunchCrunchLunch1 votesyeah so vayne gets % damage from bork. her passive. and the runes.
darkdill1 votesAnd would have to give up either AS or AD in her runepage.
MunchCrunchLunch1 votesmeh with all the AS items available I don't think vayners would mind.
darkdill1 votesThey would mind, as it could let the enemy ROFLSTOMP her early-game, especially if those %ArPen runes only work against bonus armor.
MunchCrunchLunch1 votesyou can get items that help your AS for late game but you cant get % damage items. except bork
HexaDecimel1 votesAll you need is more 