Don't really know about others' preferences, but I find it vexingly inconvenient when you try shooting powerups while (sometimes unknowingly) having a very limited number of their respective ammo, you end up powering up the ammo only with no amount gained. This forced the habit of depleting the last few bullets of it first before shooting which has occasionally put me in some disadvantageous situations. So, we don't we just consolidate that punishing behaviour into always getting that juicy +20 ammo no matter what. Isn't it a lot better that way?

P.S: The mutator running on ZD already does this by default, and everyone seemed quiet and content about it.