To be honest, if thats the route they decide to go i wont be too annoyed. But it's a nice change of pace attraction. Where else can my 8 year old daughter drive me? There is nothing else like that in the park where the little ones can take control.
Something like Tron would be sufficiently big enough to either be a huge draw for Studios or for a third gate. Not sure the area would be enhanced by going totally IP. Isn't Hyperspace Mountain only temporary anyway? When it reverts to Space Mountain, then Autopia makes a lot more sense.