Interesting.. thank you for pointing out the distinction! TMYK! 🌈⭐
What about just.. keeping everything as-is, but adding actual APCs and not the currently-present IFVs?
They could pack much less of a wallop, but take a much bigger one than IFVs, considering.. well.. their role being to be armored, lol.
Also, regarding the IFVs available right now, there's a bit of an issue where when you're in the BTR / IFV that has the side-view ports.. you can't do a damn thing as an infantry if you see someone sneak up through your viewport.. You have to dismount and shoot them, which is disorienting, rough around the edges, and come on the point is to be in this big safe(r than being on foot) box on wheels, not to hop out like some cowboy!
Why not add side guns to, say, the first two seats on each side?
Two 50-round belts of 50 cal, similar to the guns atop the Humvees. Nothing to fight a war with, but enough to force infantry to back the hell off if you still have rounds.
Two seats in case the first guy has the reaction time of a snail on nyquil, so you can pick up the slack as the secondary gunner, or alternate fire when you're holding off an important corridor.
In general, giving the IFVs a lot more firepower should give them a bigger role and chance to survive while crewed, as opposed to being throwaway tin cans that people drive to points and then leave behind.