Re: X-MEN: FIRST CLASS - Grading+Discussion **SPOILERS!**
I'd rather not see the characters run into Wolverine again until he joins the team. That said, I wouldn't be against a cameo if they could find a way to do it without any of the team members, and have it make sense.
They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance. - Terry Pratchett, Equal Rites