I don't agree with much of this. If you're asking whether I'd[1] prefer to have MCW come back for his junior year to play alongside Ennis, and [2] whether he'd be improved next year -- abso-freaking-lutely.
But I don't buy that Ennis would be 1/100th the player MCW is this year. College basketball is full of examples of frosh coming in and performing at a high level. Ennis is a top prospect; not suggesting that he'd need to come in and be Kenny Anderson, but I'd be surprised if he isn't up to the task of starting from Day 1 and performing at a high level. This kid seems to have "it."
Hey, I hope Ennis is the next Chris Paul... but he isnt even close to as highly a regarded prospect as MCW was... I may have exaggerated a bit, but there is no way that any logical human being would rather have Ennis over MCW next year.