but "dragging" using the middle mouse button (=mouse wheel press) should work, right? I'm also absolutely in favor of arrow-key-scrolling.
oh, and while you're at it: perhaps keyboard shortcuts for firing snapshot (s), firing auto-shot (a) and kneeling (k) could be added? firing keys would always use the primary weapon (in the soldier's right hand, that is).
we could then discuss accessing the secondary-weapon commands (left hand weapon) using w and q, but that's open for discussion, I guess...