Nothing too overpowering, you know, something that wouldnt allow you a round 30 in an instant-
1. New perks. Some guy said Sprint-Aid, that would rock, then the Stopping Power Cola theory.
2. That friggen Sabretooth thing. HECK YES!
3. AK-47 with a Pack-a-Punch that gets ya a cool red dot, and a flamethrower undermount.
4. SPAS 12 Incinerary Rounds (RAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!)
5. Fire... (something that blows/spits fire. other than a trap)
6. Double Pack-a-Punch, for twice the pack and... the punch... err something...
7. A new type of zombie (as long as it cant jump)
8. The return of the Wunderwaffe DG-2 (my buddy xD)
9. Pack-a-Punch for our little monkey friend (Monkey-Bomb. Durrr)
10. Put in the Stoner63 or M60. Lower the power a bit though
11. And now i cannot think of anymore...
These would make me giggle all day (exaggeration)