Takara is really doing some magic with these newer G1 Masterpieces. I just hope they keep moving forward with new characters instead of redoing all the ones they've already completed.
I really expect Starscream is probably on the shortlist there.
I feel like Starscream (and repaints) and Ironhide (plus repaint) are the only ones that truly need a completely new mold.
Soundwave isn't 100% Sunbow but I feel like anything new there will likely look worse and definitely cost more.