True that he would be the lone post precense on the inside. But that is also good for a big man. If you have alot of post players, and not enough quality shooters or slashers, the defense doesn't have to respect them as much, therefore they can clog the lane, regardless of where the offensive player is (who doesnt have the ball) and the can easily double team.
Orlando's hopes would rest upon Grant Hill again

But they would reach the east finals with "just" Tmac and Jemaine O'Neal imo. If they had him (Hill) they'd be legit contendors.
Jermaine
Garrity
Hill
Tmac
Armstrong
Armstrong and Garrity are really good shooters that can spread the court. Have Jermaine on the weak side and alternate between Hill and Tmac creating and slashing. Then after the defense is softened up but Mcgrady and Hill, let Jermaine go down low. I can't see how the opposition can double team him with that lineup. Too many offensive options. They would be soft defensively, no question. But Offenisvely, they'd be a juggernaut.