Well put, yosh. The art itself is really alright, it just needs colours. :3 And maybe an actual egg - I'd feel a bit uneasy "hatching" it, and it turning out to be a completely different colour. xD Plus I like the teen stage. :3 Looks... inquisitive, and quirky.
I'd say the Kioka was fine. I really like the legs. But, yes - revamping it entirely would just be rubbing it in the people's faces who don't, and might never, have one. <:3 It'd be pretty... pointless, seeing as they're only available in Ranches and Merchants' shops now, and they're not such major Creatu anymore. They're incredibly hard to attain now, so it'll just be a benefit or inbenefit for people who are lucky enough to own a Kioka if they get redrawn. A slight matter of "clas-s". I'd say the Drindian and the Murren should be top priority now because they're available to everyone, and the Goiba'll need a few new colours to come in soon.