The best action movies of the 2000s were probably the Bourne movies, Nolan's Batmans, and Casino Royale. Maybe throw Kill Bill Vol 1 in there. All except Kill Bill were not R.
Expendables 2 can still be a great movie. If people are looking for violence, the PG-13 rating will hardly be a deterrent given what we see today. The lack of swear words shouldn't be an issue.
The real problem with the first Expendables was that every character besides Stallone and Statham was, well, expendable. The script was weak.
Expendables 2 needs to give more balanced screentime, and that will be difficult given that the number of high profile stars has increased.
I'm just excited to see Van Damme in there. I hope he gets to do some cool things. I grew up loving Van Damme movies and still give people the dim mak when I can. BWWWWAAAAAAAAAAAAAAAAAHHHHHHHHH!!!!!!!!!!!!