If you're giving it the Lenz treatment, I feel that it is only fair that you also include the ammo mutation effect, unless you want to make Carrier mandatory, again, for no real reason other than the fact that your ammo system is RNG based and sloppy, and has been out of date since the game started, much like the enemy AI was when it was redone. All ammo reduction does is either be effectively no change, or so restrictive on explosive weapons that people just flat out stop using them. For instance, the Angstrum's characteristics actively work against itself because allowing people to fire more rockets by building towards that mechanic doesn't have any compatibility with limiting the total amount of ammo it can carry. It's all backwards and slapdash. The Kuva Bramma was already "balanced" in terms of ammo consumption because in high level situations, you would in fact run into the ammo problem just by nature of how the ammo system is broken to begin with. But using two wrongs to make a right is sloppy.
I approve of the other changes for mechanical reasons (it makes way more sense overall to change the explosions to be optimized and efficient), but hard ammo limitations (as opposed to smaller magazine sizes which are okay and make sense) just don't serve any real purpose other than to frustrate players over a poorly designed ammo drop system that has not been changed in forever.