So, all these years later, I score a Beast Wars Rampage, or Protoform X if you prefer, for pocket change. The trade off is that he is incomplete, with perhaps the largest grievance being a lack of crab mode legs. While i do certainly need to keep my eyes peeled for proper parts, as I do with Depth Charge's tail, I managed to do some custom work that might just fit the bill for now, not to mention the various added paint apps as well.
https://youtu.be/pdf6vgfzNQY