I’m not certain whether jonh is still planning to pursue a Shaw ghost, and he sort of pops up as he pleases once in a while.
I don’t have any preferences for the Luke figure, just whatever you can put together that looks feasible to have been made by those aliens. It doesn’t necessarily need to look as crude as the Canto Bight slave kids’ since this would have been made by adults for a show rather than duct taping trash to make a secret toy.