I get what you're saying. I think that technology will allow them to be more active now though. But, I don't see a major problem with Han Solo or Leia . They are in good shape and weren't really in that major of physical roles in the originals. Well Han Solo is in great shape, Carrie could stand to do some physical training. I think their being old is a good thing because it gives balance to the new generation. After all, they are supposed to be handing Star Wars off to a new generation. I don't think they should recast and get young physical actors because then we're just getting another triology with the main 3 at the fore front. Honestly I don't want that. Just let them get older and let it be a transitional film where they hand it off to younger talent. That is how I see it.