That was probably sarcastic but I'll still reply:
Not necessarily. In WiiSports Tennis, even though it brought a new level of immersion, it still felt disconnected at times. WiiMotionPlus should be able to smooth everything out and make the game feel much tighter and more responsive.
Also, I think the players should still move by themselves. You can reserve the right to move or nudge them to the spot you want with your nun-chuck, but they'll start moving to the appropriate spot automatically once the ball is volleyed or served to their side. You should also be able to set their movement sensitivity to all or nothing and everything in between.
This will help those that don't mind the player moving by themselves, but in certain situations, would like full control over them. I like to fore-hand rather than back-hand, and if a ball is coming right down the middle, it would be nice to be able to nudge the player one way or the other in order to make a more comfortable volley.