On the topic of mags for guns, i have always found it to be a bit 'boring' that many weapons don't fire more bullets on full auto. Like if you have a really weak submachine gun that has a large mag, you would expect its strength to lie in its ability to spray the enemy full of lead really fast. Instead, these weapons usually have around 5 or 6 shots, which of course is more than 3 shots from a heavy assault rifle. Those 3 shots from the higher caliber weapon however is ultimately worth a lot more, because armor plays such a significant role. Even the gatling with a 200 round (or was it 300?) box mag will only fire 20 rounds in a burst.
And therein lies another point of discussion, the fact that there doesn't really exist a 'full auto' fire mode where the soldier would fire 10 or 15 rounds in one go...and that's kind of strange, considering that they are carrying fully automatic weapons. Another thing is that 'aimed shot' and 'burst fire' aren't mutually exclusive 'fire modes' in real life, just like 'snap shot' and 'burst fire' aren't either. Aimed/snap is about taking aim, but there is no reason why you wouldn't be able to do both single shot and burst shots while taking a careful aim.
I guess that last part is a discussion on changing the combat system, which is probably very difficult if not impossible to do. My first point however, i'll try to form it into a question. Can/will you add a 'full auto' fire mode that fires substantially more rounds than burst?
