Should I trade in Black Ops!?! Help!?

I happen to like Black Ops better than BadCo, but based upon what you say (you don't really play Black Ops anymore and you'd be getting $2 less than you paid for it after use) I'd trade it in. You might like Homefront based upon what you say (it seemed to me the online play was a cross between Bad Co and Black Ops), maybe try it out first at Blockbuster or such to be sure.