Re: Why so few weapons?
Having less weapons is less of a pain in the * to balance them to each other. So yes, the "Well if you had more guns, they would all feel the same" argument is indeed valid. Especially with modern guns, which are mostly based on AK or AR-15 platforms or even better, straight up clones or just minor improvements for them. There´re just a small amount of modern guns, which are actually somewhat unique from the usual design of modern weapons.
If you want a * of weapons, where the uniqueness is bigger, go to WW1 and WW2 weapons.