vajda: How about changing the Avatar swing
For starters, changing the way the avatar swings would decimate about half the golfers here, if not more. Those jerks in the backswing are crucial to many as they are empirical reference points to gauge strength. (Aids like Shot Pal would have to be a necessity, otherwise.) I'm not sure that was the original intent by WGT but it certainly has morphed into a very accurate swing aid, seeing those avatar moves.
For your idea to happen you would have to rely strictly on the meter and whatever gauging method you use like the Shot Pal or piece of tape or whatever. Seeing the swing as you make it happen allows you to develop a rhythm of sorts, too. Changing anything after all this time would be a disaster for many.
A reasonable compromise might be for there to be an option to view your shot in the first person, with the avatar completely gone. That would be interesting. Sure would play hell with my putting, though-I neeeeed those moves. ;-)