Even with the 4th fastpass change, I'm not changing my strategy. We're going to do rope drop at park with no fastpasses and use fastpasses in the evening. If, however, we're going to World Showcase at night, we're using fastpasses in the morning for a more relaxing day. We always leave the parks around 1 or so, and go back to the pool at our hotel.
For example, I'm thinking I should be able to do the following at MK at rope drop on a Wednesday in two weeks:
Space Mountain, Tomorrowland Speedway, Winnie the Pooh, Little Mermaid, IASW, lunch at Be Our Guest, and TTA by 12:30 or so. Go back to AKL and pool for the afternoon. Go back to MK for dinner at Pecos Bill's. Ride PoTC (FP+), HM (FP+) and Jungle Cruise (FP+), finishing up around 8:10, I believe. Ride Dumbo, maybe a character meet somewhere, and then watch Wishes at 10pm. We'll hit up Splash, Big Thunder, and Peter Pan on another evening.