granted, it's not an issue for vanilla games, and certainly not during battles, but when you play something like PirateZ and try to equip your soldiers in the basescape (or before a base defense mission, for that matter), there's just so many different kinds of weapons and ammunition... and the game tries to sort all small items into the gaps left by larger items, so hunting for the right kind of ammo for the weapon you just equipped can be quite a challenge.
two things could make this easier:
1) sort the items on the "floor" by their listorder. nevermind the gaps. we have that nifty arrow that the original original game didn't have, so we don't have to fit everything into one screen width.
2) add a "left" arrow! sure it's nice to be able to scroll, but it would be even nicer to be able to scroll both ways