Hands are perfectly okay with me, it shows that the creator put some time into making the weapon.
However, I really do prefer reloading animations. It's better to have a good guess on how long the reloading will take.
For iron sights, I like that as well because it changes combat entirely. Snipers, at least need ADS so you don't have a huge gun covering half your screen when you shoot.
Also, how can you say the arms are stretched when blockheads don't even have arms?