DHS needs more than these. It needs street entertainment, it needs more exhibits, more meet and greets, more quick serve dining options and more places to sit down.
Walking around both EPCOT and DHS in my last trip made it very clear how sparse DHS is and how lacking in things there are to do overall, especially if you can't do thrill rides.
DHS doesn't have anything like the performers in World Showcase, the model train display, the Seas aquarium. You walk around the park and there is very little to look at or grab your attention between rides. Many areas of the park don't have interesting architecture, gardens or even shade from the sun. Long gone are many of the interactive and educational things (self-promotion aside) that gave the park more of its identity.
They spent billions redesigning sections of the park and its infrastructure, but there isn't really much more to do than before. Especially if you're not interested in the tired line up of shows.
MGM Studios used to be my second favorite WDW park, and the stuff I do like, I really like (and Muppet-Vision looks the best it ever has), but beyond those handful of attractions, it's really quite dull when it's empty and not very fun when it's hot and crowded. It should be so much better after several years of major investment and construction, but it feels like they barely made a dent.