It seems like the push for IP everywhere is to draw people to the other parks... adding Frozen to Epcot to draw families with kids there and away from MK, to add Star Wars to HS to draw people away... force people to visit all four parks somewhat evenly so they can hit all the 'highlights', which in some (many?) people's view are rides with name recognition, i.e. IP.That can never be done at mgm...it is a tough sell at dak...and they’ve rotted the piling out from underneath Epcot and making that hard.
After all this stuff opens...not a lot will have changed. And probably the best pure attraction from a crowd use level will end up being tron...which conveniently is in mk.