I think some people may be missing the context: ALL cantrips originally had you draw a card at the beginning of your next turn. There were no cantrips until Ice Age, and they worried that immediate card draw might be too good. Imagine a whole class of common cards that could cycle for one mana: useful as a deck thinner. That's why they played it safe and left a delay in there. After they got more feedback, they decided the delay was an unnecessary safeguard. That's When you get Chromatic Sphere, which strictly better simply because it's the update.