I give Republic Commando a B+
Yeah, this is an enjoyable romp. Great idea with the intuitive squad commands. It's fun to set up your comrades while you go crazy blasting everyone else.
The deathmatch online is pretty horrid, however; really shows how a developer has to spend a significant amount of dev time working on that part of the game, as opposed to just throwing it together, as they did with Republic Commando.
A B, maybe a B- type grade for me.