This part is a little disappointing.
The actual weapon loadouts are also a bit different as well, with a primary and secondary gun available in every create-a-class. Rather than being stuck to just pistols, players can add a shotgun, machine pistol, or regular pistol in its place, as well as rocket launchers. Apparently someone else had the same feeling I did about shotguns – they're nice, but I'd never use one over a rifle or SMG – and decided to shoehorn it in with the regular set.
However, this makes me happy.
The first major note I can make on the game is that, as expected, it's pretty unchanged in the gameplay department from the previous Modern Warfare. IW knew it had a hit on its hands in the first game, and as such Modern Warfare 2 feels like a true Modern Warfare experience