heres the ongoing problem with this..... they guns are allready great and the game is well balanced.
the onlying this would be needed is a lil more choices of pistols n stuff, but not any more powerfull then the rest, as part of the the normal upgrades. thats all.
perhaps a 75 kill would be great but its not often someone gets that high so its a lil pointless.
just some fun guns would be better then uber guns.
like lets get the five seven in there and maybe a autoshotgun in the 35 kill range with perhaps a tmp in the 35 kill range
the xboxs a lil lame sometimes tho. but thats my two bits.