Guild Wars 2

Rather than nerf AOE damage, is it possible to just increase AOE cooldowns and then reduce the cooldown for each foe hit?
That way players can still use them against individuals, but they won’t use them as often unless they are actually hitting groups.

As an example, Mesmer Chaos Storm currently has a 35 second cool down.
It could be made so that it normally has 40 second cooldown and recharges 1 second faster for every unique foe hit by it (including new foes that come into it’s field).

Why are you asking this?

NO.

I’m sorry but this is a very bad idea. Light armor classes (except D/D eles) are already at such a large disadvantage with having long AoE cooldowns and pathetic single target DPS compared to melee classes whose spammable #1 attacks are also AoE attacks and are as damaging, if not more damaging, than a majority of AoE attacks by the light armor classes.