That's a good point you bring up although how many people thought BG Teela would come to fruition and she was even more obscure to many. I think it will totally hinge on how well Granny does when he goes on sale. I just realized that scale wise wouldn't Procrustus need to be about 6 He-Men tall?
No seriously thought I'd be ok with Megator/Ty buck being used and then re-tooled a tad to accommodate 4 arms- it would serve as being functional and make him slightly larger than Tytus. I would definitely want them to wait till they decide how big Granny will end up before they do Procrustus though.