Don't buff Ezreal.
Buff
then see where that leaves him. The item takes forever to stack. No one builds it except Ezreal, Crit and Lethality have been buffed and it has left this in the dust. If Ez is buffed again than this item can't be made decent without breaking Ezreal.
sucks in comparison to
.
All of them can use it well. That's like 2 music groups worth of champions.
Both of those items are good for Tanks. So, why should mana items be any different? A small buff would be fine, but if you ever see some champions that have no business buying it and get away with it, you know you've gone too far.
OR
Not both. The guy I was responding to was trying to argue that Ezreal's Q needed to critical strike. I don't agree or disagree. I think if it did, they would have to nerf the Q a lot and then non-critical strike builds(like Manamune-including ones) would suffer from the change. There's no need to tie him to critical strike as a scaling stat and he already has great performance with it because of the presence of Fervor as a keystone. Once that keystone rotates out, he'll go back to buying Manamune a lot more often or so I presume. It can't be helped if ER is way too good on him right now. Runes reforged is almost here. Let's see what he looks like after the rune changes before demanding changes?