I don't think their alien line is going to fail, the windrix marine was a strange call, and imo it should have been an exclusive if anything, but I think him and the rest of series 2 will sell well as well as the battle packs.
I just hope their next marine move is smarter, somewhere along the lines of Vazquez or Drake. I think it'd even be a better idea for them to do the ACM marines before anymore "original" or tribute marines.
Movie characters or game characters are the way to go