Seuss Landing WOULD look fine.. the problem is, they don't take care of it, so it looks like a dirty, mucky, washed out wasteland (like Dino-Rama). The walkways are tackily painted and as a result they always look dirty, faded, and scuffed up as opposed to the colorful look they should have. All of the facades have visible grime, rust, and signs of fading and sun bleaching on them. I rode One Fish Two Fish recently and the thing is covered in rust stains and grime. Before anyone tries to correct me and say "But Dr. Seuss books use faded colors!" - 1. They use PASTEL colors, not sun-bleached and dirty pastel colors, and 2, some of it is supposed to be heavily saturated - example, the last time they painted the giant hat on Cat in the Hat, the reds were deep and saturated. Once again it is practically pink from fading.
I'm not loyal to either brand, and I point out the flaws in both pretty commonly on this forum. For instance, Disney, for quite some time, has had a bad issue with keeping the effects on their attractions functioning. This is generally something Universal is good at. I know there are enthusiastic employees at Universal, but much of them are within the WWoHP. This is also another thing, though, where many factors come in to play that affect your perception of a park's service. I have lots of great memories of great interactions with Potter TM's, however, my last few visits, they have been stressed, bored, or chatting amongst themselves about parties they went to... not to different than anywhere else at Universal, or Disney at night when the CP's are staffing everything. Time of day, the temperature, the crowd level, their level of staffing, and a bunch of other factors all affect the level of service you will get. In my experience, the two resorts basically even out, but for different reasons.
I will agree that Disney seems to actively be p---ing away the cohesive theming they have built up and strived for in the past. I'm not talking about cohesive theming though, just aesthetics. Visual clutter - the Universal parks are filled with it. Magic Kingdom is a collection of classic fictional genres. Yes, there are a few attractions that go against this rule, but that's cherry-picking.
I'm not referring to the soundstages at all, as they are appropriate theming for "Studio Central." I'm referring to the ample locations within the parks where you can clearly see backstage just by taking a side path or turning around or what have you. You can see backstage in every land in IOA sans Potter and Skull Island just by venturing off the main pathway. Same at USF. Two examples: walk next to Storm Force Accelatron or down the road between Mummy and Louie's. Backstage and ugly infrastructure in plain sight. This is not even close to the same as straining to see backstage at Disney or seeing a tall, impossible to hide building where you shouldn't see it from a great distance.