SO, Pandora-esque tiers with SWGE? I think they could get away with that in DHS. Still not great, but better than having 3 tiers. I think between TSL and SWGE there will be 2 tiers still with SDD moved into tier 1, possibly replacing TSMM, especially with the added 3rd track lessening the wait for that ride.
Once SWGE comes on, I expect those two rides to be one tier and the rest all thrown together. Some people will still chose the Mermaid Show, Frozen, Fantasmic, Disney Jr (or whatever if it gets replaced) Indiana Jones in addition to TSMM, SDD, TT, RRC, Aliens, Star Tours (or whatever replaces it), Mickey Ride. Maybe even set aside a nighttime firework area for FP+ and you'll have people spread out their things. Heck, with little kids, many parents are gonna be forced to utilize a show plus only 1 ride outside of SWGE. I know for Pandora this past summer, I was able to get the Banshee ride, did Safari b/c the 3 yr old loves animals, and then it was a show. Riders of Kali and/or Everest love people like me...and I think the same will hold true at DHS.