I find Titanic hydra to be a bigger issue though, the active is way to much burst.
People loose their minds over duskblades 200 damage proc when trinity easily reaches 250-300 and is proced much more frequently, or when titanic thx to the AA-reset gives 100%ad + 40 + 10%hp + on-hits, which on an average bruiser in the late easily reaches 700damage...
even earlier in the game, lets say jax takes it as second buy after trinity and completes it at lvl 12, he'd gain 206damage from trinity and 168+40+210+53(1/3 of ult proc) = ~471 from titanic for a total off ~677 damage from non kit damage. And this is calculated from only base+items as stats, no runes involved.
But duskblade is busted with it's now 107 damage at lvl 12...
I honstly don#t think trinity is that much to strong given the overall powercreep of the game. It's just outclasseing cleaver atm, and those are the only two hard CDR options bruisers have, and the main reason for it outclassing cleaver is that 150more hp are fully irelevant these days and the %shred is basically usless when you just can take conqueror for truedamage or face a full squishy comp every other game.
However, despite trinity beeing maybe overpowered and titanic beeing actually busted, bruisers are still far from dominateing the game as the overall gamestate just sucks for 'tanky-dps', no matter how tanky you go, you die basically within the first cc-chain in any lategame teamfight. THe only chance for melees is to burst their target befor that happens, which is why bruisers either get absurd burst or are splitpush only.
I'd prefer a gamestate where tanky dps can just be that, tanky-dps, rather than somewhat less squishy assasins with no exit, but as things are right now, bruisers rely on trinity and stuff like hydra and steraks to be any relevant.
Tinity tells alot about the powercreep in this game:
Old trinity gave:
-30ad
-30ap
-30%as
-15%crit
-250hp
-250mana
-12%ms
-a chance to slow 35% for 2sec on-hit(i think it was 30% chance)
- spellblade for 150%base ad with 2sec cd
for 3900g
Later the slow chance was replaced by the rage speedboost and the spellblade damage has been increased to 200% base ad and got the cost reduced to 3703
Now it costs 3733 in an anviroment with faster gold gain(http://leagueoflegends.wikia.com/wiki/V5.22) and gives
-25ad
-40%as
-20%cdr
-250hp
-250mana
-5%ms
- 20ms for 2 sec on-hit, 60ms on last-hit
- spellblade with 200% base ad on 1.5sec cd
Now while the rae value off all stats together isn't really higher, old trinity was all over the place with hardly any champ really useing all the stats, and more power was focused on utillity(more ms, the slow proc in the past) while new trinity fits perfect for most of it's users with a high self synergie between the proc and the cdr.
And despite old trinity arguablly beeing much weaker in the past for nearly all users compared to now, especially way back with the 150% proc, old trinity still was a strong item duering it's time...
, still being tanky as hell but doing a fuck-load more damage than they used to and scaling a lot harder into mid/late game.
but rarely and his win rate drops 10% with that compared to trinity.
for a decent amount of time at some point. It's always been a decent item able to be used by a lot of champions, but lately even manaless champs like 
can take it and not feel bad. I think the item may just be too good without the mana even. How to make the mana more useful in the item and not ruin it for everyone else IDK.
