While yes, Tails is based off the kitsune, it doesn't necessarily mean he's meant to become one. Not once in the games, even the classic titles, has he ever shown to have magical powers of any sort. He's just an ordinary fox who was born with an genetic mutation, on the surface. He's unique in the sense that he's very talented and has the potential to become so much more when he's older, than him just randomly becoming a powerful being. (But I won't lie and say it wouldn't cool as a super form)
Haha I thought I might get one of these. Well darn. I was sure that I read that he was one, but I guess I must have read that wrong. Thanks for letting me know! Don’t be afraid to tell me off anon. :) I don’t bite, and I’m willing to admit when I’m wrong.