There’s been strong discourse of late regarding the value of different blitzes, and the problem with recharging certain blitzes when other classes are more in need of them.
My suggestion for something that doesn’t need a complete rework of the concept?
Make grenade pick-ups only give you back half your grenades, but make them twice as plentiful.
This would give the overall team access to about the same potential number of grenades over the course of a mission (admittedly slightly increased if you round the halving up, and you also don’t “waste” the all the left over grenades you had when picking up a pack), but it does make it a lot more practical to share them around the team.
(I would also personally like to suggest making ammo crates have eight uses that are each treated as a large ammo pick-up, to try and reduce the amount of impact a player has if they decide to double-dip the pack to refill five ammo. As a general thing, consumable pick-ups that completely refill someone’s supply - unless it really is a supply of one, like stimms - are just less suited to sharing well amongst a team).