remove greivous from this game forever or until you bother to actually fix him

They won't fix it, and they won't killswitch him either.

If they don't want to give the proper respect their customers deserve, I suggest at least doubling the ability's cooldown. It'll still be opressive, but much less frequent then right now. And considering it's already a fast cooldown ability, doubling it won't even make it the ability with the longest cooldown in the Hero roster.

Simple way to reduce the unfairness by a lot. Maybe doable through a server patch even, which seems to be the only thing they've been doing nowadays.