Ok, I propose old creatures get some of the new animation rigs. Yes I get that this would also prompt creature remodels, but it'd be a cool quality of life update: here's what I got
Update the corythosaurus, parasaurolophus, Para gen 2 (Maybe zalmoxes?) all get updated to the hadrosaur animation set
I also suggest that the argentinosaurusget updated to have the titanosaur rig (the one brachiosaurus has) as the argentinosaurus is estimated to have been the largest land animal to ever have existed
Like I said, this is just a quality of life change, but I think it would breathe new life into the game