At the risk of straying OT, I must disagree. Just looking on the internet (TripAdvisor and others), Disney has 4816 deluxe rooms, and Universal has 2400. So, Disney has twice as many rooms, and twice as many parks. Giving unlimited FP/FOL Pass to guests there should be the same burden on the parks.
So, I believe it would work just the same. And it is so universally loved (pardon the pun) at Universal, Disney will likely get there, just via a painful path.
Back to today's experiences...I haven't seen any reports of the guest reactions (pro and con) yet.