Maybe it's because the Tak/Tom version will come with the two different heads to represent the two original Powermaster characters and that's a place to store the extra.
Just a guess - could be wrong.
Really? I'm quite surprised considering your rather extensive collection. I must admit he is number one with a bullet on my "I wish I had..." list from G1. Oh well, we can all vainly hope for a reissue one day. In the meantime I just have to wait for HLJ to get my preordered Tak/Tom version of the above toy in.