Yeah.. that's a lot of stuff. But honestly, I already don't use all the vanilla pockets because of weight constraints on my soldiers. Usually it's belt plus maybe something in the backpack, and a weapon, obviously.
The other thing is, although I like to expand the original, I also like to keep the game close to the original. If you give your soldiers that much more options (and a quickdraw 2nd rifle?!) and somehow manage to take advantage of it, then the aliens need something too, because they are balanced against a soldier with limited options.
I sympathize with the poor sectoid carrying his heavy plasma and one grenade.. It's just not fair (and I don't think the AI is built around taking advantage of more options either, so even if you give them more, it doesn't seem like they would really take advantage of it.. So the alternative is to make them stronger/better shots, which I don't want).
I agree with Falko: I see XCom agents as specialists that fly in, fast and deadly, to contain the situation quickly. They don't need food, they don't need multiple grenades, they can't be heavy because the fight has to be won quickly. Otherwise the aliens kill all the civilians, the crashed UFO gets rescued by another (bigger) one, or the aliens escape into the wild and will cause problems later.
Also, from the lack of answers, I guess nobody knows if you can define range parameters on clips instead of weapons?