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Original MOC-er here. I think it would be cool for Hiika to be the mascot but I'm not gonna try to force it. Some people have a problem with the system hands which I guess is understandable. I honestly hate unnecessary system on MOCs, especially when it's used to create a bunch of ugly bayformer greebling. I don't think it can really be avoided when it comes to smaller, intricate parts like hands though, especially when you're working with a character that's already small. The Bohrok pins to mixel joint connection seemed too good not to use in something, and I wanted her to be super poseable.
I can post a breakdown pic if anyone wants to make their own version or tweak the design.