I do think a slight ball joint socket would have been a great way to get a little more range of movement in the arms. However with the whole thing being cast in resin, I can see why they did not do this (paint wear, etc.)
If Hot Toys were ever to make a Jabba, I could see alternate hands and articulated swivel wrists being easily hidden. I don't know how you could improve the dais, besides adding a light for the snack bowl. I do still wonder if they'll make him someday? Knowing Hot Toys, what would be even worse is them showcasing an amazing Jabba proto that never sees a release.
I'm hoping for a backdrop too! I still haven't found any quality pictures to work off of, not sure anyone else has had any luck.
Regarding the faux leather hide that was included, I did make a new one, using real top grain leather that I have a ton of scraps of. Here's a comparison.
View attachment 441763
View attachment 441764
I think it looks better. I could cut a larger leather piece similar to the first Jabba. PM me if you're interested.
Wow - you made that? Looks great!