>>5483387It's a big, chunky hunk of plastic. Anything that big or bigger is going to have issues. You'd either have to make the joints stronger (limitations of quality vs cost) or the plastic hollow (see, Hasbro's Devy),
A problem Rex specifically has, though, is that the crotch plate clips on the front and back and hangs down a bit from the actual crotch. It's done that way to give the impression of a correct proportion waist. It can pop off easily if you fiddle too much. Another issue is that the upper legs of Rex are on sliders to allow the legs to extend or retract based on which form it's in (base bot, alt, or combined). Because of the weight of three or four bots, they can slip down easily as well.
Honestly, they're not much of an issue on Mine, and My Perfect Feral Rex (with Feralsaber) feels absolutely fine.
