And that's after the addition of Toy Story Land and Galaxy's Edge with a sprinkling of other attractions designed to hopefully keep you there. Yet, it's still a half-day park. And likely will remain that way even after MMRR opens. The park needs another land like mashed potatoes need gravy. Maybe two.
I'd get more specific - the park needs more compelling attractions. They can build as many lands as they want, but if they're pulling light duty like Toy Story Land or Animation Courtyard it won't matter. If they build another land or two with a varied menu of attractions (as in more than the 1.5 they've gotten in the habit of building) I bet the needle would move.
They don't all have to be grand slams like Rise, but they've got to stop bunting with attractions like Alien Swirling Saucers unless there's a lot of protein already on the plate. No one minds the Mad Tea Party, Carousel, and Dumbo in Fantasyland because it also has Small World, Peter Pan, Seven Dwarfs, Pooh, Mermaid . . . there's a lot else going on.
These days it feels like anything that isn't the major headlining attraction of a new land is getting the shrift - and what happens then is that people wait in line for an hour+ for that ride, spend 4 minutes on it, and then skip "town" for the next hit because that land doesn't have it. That doesn't work when you're trying to get people to stay in a park all day, because they feel like they're done when they've seen the highlight reel. You've got to give people more reasons to stay in place longer before they move on to the next part of the park.
This is harder with ADR and MDE sending people all over the map at all times, but all the more reason you have to give people a reason to come back to a space they've already been. If you wait for Na'vi River Journey before your Fastpass for Flight of Passage and then pop quickly over to Asia to get on Everest, what are the odds you're coming back to eat at Satu'li Canteen later that day? Not necessarily great. But if you had another ride to draw you back that way or keep you in the area after knocking out the major offering, you might get hungry before you've run to the next E-Ticket and look for the options in the area. A good D-Ticket with a reasonable wait would do - does such a thing even exist anymore?
An Indy Land with an E Ticket like has been rumored, a D-ticket on the level of, say, Mine Train, and a C-Ticket like Na'vi River Journey, plus a restaurant, a quick service, and the requisite gift shop or two would do sooo much to bring DHS closer to being a full-day experience. If they found a way to keep the Stunt Show in all of this, all the better! Though I don't expect that this echoes what Disney actually has in mind.
EDITED To Add: In rereading my post I find it funny that I've listed Mine Train and Na'vi River Journey as tier examples to fill out a land when I've griped on this board about the shortcomings of both - you'd think they don't fit my earlier plea for Compelling Attractions at DHS. But I think it's fair to say that both of those rides would hold up more successfully if they weren't tasked with doing so much heavy lifting on their own - Pandora with a nice D-Ticket between FoP and NRJ would balance the land favorably for a smaller experience like NRJ. Seven Dwarfs Mine Train is in the unenviable position of being the newest ride in the post popular area of the most popular park in the world, and I think that if New Fantasyland brought another attraction in along with it and Mermaid (and didn't slouch so much on the execution of Mermaid) then Seven Dwarfs would have less pressure to deliver as a MAJOR Fantasyland experience, which it wasn't
really meant to be. A new land at DHS with a solid E-Ticket and two other rides comparable to these is a more favorable mix of new attractions than Disney has given us at once in a looong, long time.
