I don't see them touching Lundgren, he served his part well, but he was pretty much a douche in the movie, I don't see him being too popular as a $150+ figure, and as old and ragged as Stallone looks, Dolph looks even worse for wear in Expendables, so I'd think even a lot of Dolph fans wouldn't find much appeal in a Gunner figure, and you couldn't really make Universal Soldier or any of his popular roles out of the portrait.
While Couture and Crewes would fill out the gang, they were a very small part in the film, unless HT saw a market for those two beyond their characters, I don't think they'd invest in figures, probably wouldn't sell many.
Anyone trying to to customize a Crewes could use the gun from Predators Royce and just paint it black, unless there's a black 1/6 of that out there too.