This might be too close to ascended cats, but I think Seraph cats could be interesting! Instead of having big wings, they'd have wings for ears that cover their eyes (or not, if that's too hard to make look good) and little wings near their paws! Maybe some tail feathers too? Either replacing the tail or added onto the tail.

And as for something a bit less imaginative, I'd love to see the Karpati mutation added! It could be a variation of white, since Colorpoint is like that here, and this seems to be temperature based just like Colorpoint is.

Here's some rough visuals of the basic ideas! I tried to match the visual style of the markings for Karpati, but I struggled making the feathers for the Seraph Cat owo"


Also loving the bug cat ideas I've seen scattered here, they look so fun!

I have seen it a few times but I just want to throw my hat in and show interest as well for visibly disabled cats… missing eyes/ears/tail but also especially the ability to have maybe a missing paw optional, even if it was only one or two at a time (in the case of alchemy or a free selector like poses and eyes) would be so so nice visible disabilities (esp limbs) are Not common in pet sites at all, somewhat understandably given the clipping issues they can cause, but I at least would be so so willing to sacrifice being able to use a few pieces of clothing that look silly/off on certain poses/cats even just for a few invisible limb options. Eyes too would be amazing (though at this point I should just suggest patches haha)