USF and Epcot are very similar. Both have great attractions and experiences (Mummy, Diagon, Guardians, Soarin' etc.) but also feature outdated/horrendous attractions (F&F, Simpsons, Figment, Mission Space), mixed in with random/questionable "Why is this here?" attractions (like Fallon/Moana).
But my biggest gripe towards USF is that as a park (the physical environment, not the lineup of the park)... it's bland.
Epcot and USF both lost their central idea/theme years ago... but Disney has at least been able to make the park somewhat manageable to visit now with the hub reopened and creating some fantastic spaces just to be in. Outside of Diagon, USF is very lifeless with stale/drab buildings that have no purpose. At least Epcot has edible decently-priced food with great operations to make up for the lack of poor upkeep.
I get that USF was a studio-based park when it first opened, and it worked back then. But in 2023 there's virtually no film production occurring that guests see. Would love to see the park's entrance be transformed into a celebration of films using art deco motifs/extensions of Hollywood (like USH's redo or Beijing) instead of the current drab false studio look.
One thing Universal is doing at EU is "bringing back the park in theme park" so I hope USF gets this opportunity as there are several areas that feel dated and are miserable to walk through in the summer with the heat bouncing off the asphalt. Minion Land is a poor excuse of a land, and really needs to add features that make it feel like a Minions-themed land, and not just a soundstage with a logo and a banner or two with characters.
While I don't like the direction Epcot is headed... it lost its way years ago and I don't see them realistically turning the ship around so I can't blame them for changing course.
What the park needs is a rejuvenated facelift to finally move away from the studio environment.
My complaints towards USF also apply to DHS.