GD is right on the money there IMO, You can't have people download a model the replaces the one they have, it needs to be hexed. As for the rest of the stuff that you want Uteams can take care of all that by forcing the models on the admins, and just force a model on the other groups aswell. All the standard players on my server have male1.mdl for their model, the admins and operators get to pick whatever model.