Ah, I thought about one only starter. It would have three forms (a tendency nowadays), each form being Grass, Fire or Water. And three possible evolutions, one for each form. I don't know why but I'd like to see a Water/Bug as the final Water starter (a super cannon spider, don't ask me why).
That would be very interesting and definitely break the tradition. Though, I'm not too sure if I'd rather that or select from 3 different starters. What they could do is keep 3 different starters but all three have 2 formes? Though that might be TOO much lol.