I'd love for Stern to remake GnR but lose the widebody cab and the dumb wireform ball launch.
Would also love a SMB remake ... still a hot theme.
Take Elvis and retheme that game (Deadpool, Star Wars, Monty Python, anything other than Elvis)... keep the same rules, same playfield layout, just new art, new music, and new dots
I think any of those three would possibly get my cash