WDW Resort has seen no increase because of Pandora. As a matter of fact, resort attendance is soft-ish. Not as bad as last summer, but not over crowded like 2015.
Intra-resort traffic flow has shifted, but not in a helpful way. Not in a bad way, but it hasn't had the desired effect in relieving congestion at the MK after dark. Which was the only thing TDO was hoping for. TDO didn't want the project. And the one bright spot for them was they thought it would suck up some night crowds. Didn't happen.