All the other stuff you're talking about - announcing your own games, a virtual seat at the stadium to watch your games, newspaper articles or newscasts showing your fantasy league highlights - all that can be done while using real players and real games as the basis for the stats. I think that's a more likely implementation of your dream than having a virtual statistical base.
I think the best shot for virtual fantasy sports would be during the off-season when there are no real games being played. I dread the day this arrives though, as I feel like I need a 6-month break to recover from the grind of a fantasy baseball season.
In the end, I think reality-based fantasy baseball will remain king. But I could be completely wrong about that. Maybe people will want a toaster to play second base for them.
The Braves already have a safe playing second for them.