An option to lock your weapon loadout...

[Geassguy]

would be nice. As in, toggle whether you're prompted to pickup other weapons, such as the ones dropped by enemies that are always getting in the way of looting their corpses. No, I don't want to swap my super tricked out M60 for a generic assault rifle. Make it an option in the weapon wheel, that way it would be easily toggleable for when you do want to pick up a weapon.
Just one suggeston that would make things nicer.

[Secret Wizard]

This is probably the most annoying thing about this game. Looting an enemy should be on a different weapon than swapping weapons. I wish there was an auto-loot perk or something.