Idk how I can advance my development of my worlds. A lot of them are already pretty developed and I kinda want to do some anatomy revisions on some species, but I don't really know how to improve them.

I kinda want to add more to gryphons in Injunction of Entropy like how they have the same hollow organic metal bones as dragons, air sacs in empty spaces in their torso (kinda like birds, avisens and dragons) and the wings can be used as extra arms. I imagine their shoulders are somewhat of a mix of a cat and an ape, able to rotate 360° but also can stand long periods of time walking like a quadruped. I imagine they came from seaside places and most of their diet was fish, hence why they have shark like as well as raptor beak. They definitely have whiskers like cats and a lot of catlike and birdlike behavior. Their native culture has a heavy emphasis on protecting what you care about most, especially your loved ones (homage to Greek gryphons).

As for harpies, I definitely have a plan that they come from a seaside place and resembled seabirds like the wandering albatross, but branched out and adapted to other environments. Hence why Set is a harpy/desert elf mix based on a burrowing owl.