I don’t know if unremovable evasion is a good idea. Even with instant invincibility, it can be removed with shield break. I bet a multi-turn guaranteed dodge would work on them with low health though.
Maybe they could be cunning-fierce hybrids, using evasion and wound? Since in the movies each one doesn’t have a very high attack, but they tend to bleed out their opponent. So medium-low HP, low attack, but very high speed. I’m not sure how that would do in the game though Their dodge would be weak to resilient, and cunnings would cleanse DoT, so they would really only be good against fierce.
I think it would be fine if they weren’t in a group, because then other tiny therapods that weren’t pack hunters could use the same rig.