I was hoping Bar2-D2 would have this actually.
A sliding compartment lid on his dome, and a compartment that could fit a Sabre hilt (preferably one that includes a removable blade) would have been kick-butt on this figure, and made old Bar2-D2 a perfect figure for ROTJ. Wouldn't have been overly difficult either, just a small detail that would've set this figure apart from other R2's I think.