What do you think the MUTO's final form will be like?

Ok so I am just speculating here. Sure, we don't know anything about the MUTOs but lets say the MUTOs are giant mantis-like spider creatures (that is what they appear to look like judging by the artworks of the people who saw them at the SDCC) and Godzilla wipes them out but then the last one transforms in to something bigger and stronger. What do you think it's final form will be like? I personally think it will caccoon itself and turn into a huge flying MUTO. Kinda like Battra. So yeah...tell me what your opinions and thoughts are :)