I agree I would love to see more eye shapes and pupil sizes but I imagine it will take quite a while to implement just due to the sheer amount of eye colors we already have. I would guess you need to do each color in every variation plus ones for the blinks.
And as for as what types of shapes I would prefer more naturalish shapes to a degree not super narrow or squinty, yes I adore when I capture them like that in a photo but it is a moment in time I wouldn't want to see my cats just walking around with squinty narrow eyes. Also the fact that is is a moment in time makes it all the more special. Sorta like how they randomly stick out their tongues I wouldn't want them to always have their tongue poking out either. Having them always squinty would lose that bit of random life like behavior that I have come to adore in my kittehs. I'd love maybe some more rounded pupils, maybe a rounded eye or the slants coming from a lower or higher direction or even small stars or hearts as the pupil for a bit of fantasy.
Speaking of requests I would still love to see more fantasy colors as we have been asking for them for nearly two years.
http://kittycats.biz/forum/showthread.php?tid=7608
Additional eye shapes and/or pupil sizes?
KittyCatS lover and LazyCats auctioneer. 
