I'm talking about the current ER in the post you're quoting <.<
And any champion archetype can easily find three items which will enhance their role greatly.
Literally any ADC champion could build
and crit half of the time for 250% dmg, and have tons of AD, Lifesteal and AS. And get to build boots of their choice
Literally any Bruiser can build Hydra+Triforce+BotRK and then have great dps and lifesteal while still being able to build mostly defensive items afterwards.
Literally any Mage can build Athene's/Morellonomicon+Zhonya's+Deathcap and have tons of AP, decent amounts of armor+MR, half capped CDR, almost all the mana regen they'll ever need and the stasis active of Zhonya's. While still getting to build boots and stuff.
Meanwhile, if you're rushing ER as an AD caster (even with building it out of Brutalizer and giving it armor pen) into youmuu's and cleaver, then you're not getting items which enhance your burst much more directly (Hydra or Triforce).
Any champion is powerful with three full offensive items fitting their role.
Personally, if i'm a burst AD caster i'd rather have 5% CDR from masteries, CDR boots and triforce than Black Cleaver.
If I rush ER+Youmuu's+Cleaver I don't have any strong amount of lifesteal or extra burst beyond my kit.
Riven might be able to deal if she also has
, but Riven's not excactly burst for most players.
Youmuu's Ghostblade and Black Cleaver both give mid-low amounts of AD anyway. So if those are among your highly prioritized items then you're basically getting one items worth of AD for the price and sots of 2.
I figure lowering ER's AD to ~65 somewhere would be sensible if it gets Armor pen. from brutalizer, maybe along with nerfing the mana return rates slightly.