To tell you the truth, the only problems I have with T+T are the ammo glitches and the fact that there are not that many, if any, james bond nightfire/killzone/tesla/microwave/elemental weapons. Ammo glitches are very frustrating, especially in combat. I've died countless times with the Slam shotgun having 0/42 to 2/-24, though it only happens randomly I pay for it everytime. The latter problem I mentioned before isn't really a problem, but more of a "I wish" sort of thing. I mean who wouldn't want to fry another Blockhead with a Microwave gun or take at a squad of them with a Micro Nuclear Bomb? I personally would love to take out a group of Blockheads with the Anti-Squad Cannon from Killzone and going on a killing spree with the Samurai.
Overall, I love all of the guns(though the changes Rykuta posted were more favorable than the current features)