Percs are still one of the least used grenades.
Nobody runs field supplier. Ammo box deployable is still very common.
OCA changes are needed.
So are RFP-9 and N-TEC 5.
The low yield changes make grenades evenly balanced again and you'll now see all types.
Ammo box changes also bring it back down in line and make people use other mods.
OCA changes made people use other pointman guns again.
N-TEC nerf will bring people to play obeya, ursus, far and so on, so that adds variety.
All in all these are fantastic changes and I don't know why you're so upset about the game becoming healthier.