I'm gonna have to say TR is my favorite character, and I never cared either way for him. Duke is flat, Scarlett and RB are a bit more interesting, Snake Eyes has the cool factor but he's too superhero and I think for a mute they give him more personality than they could, but he could still use some more. And is it me, or does TR come to the rescue a LOT?
And I actually laughed at the scene in Castle Destro where he's dressed like the Chinese business owner, and the guards are questioning why he's where he is, and he "waves" to an imaginary person behind them to draw their attention. It was so stupid and funny but it worked.
I also liked the banter of the Cobra goons who were talking about why they got stuck with arctic patrol... both instances were from earlier in the series and were Joe attacks. I appreciated that bit a lot.