I'd argue there are 2 type of headliners at MK: slow moving dark rides and themed coasters. Pirates, Mansion, Small World, Mermaid just aren't all that different to me in the slightest. They're all great and I love them, but I don't see them as these super diverse offerings. Big Thunder Mountain and Space Mountain are analogous to Mummy and RRR for me, as in BTM/Mummy are awesome and RRR/Space Mountain suck. The only headliner that breaks the mold in MK, IMO, is Splash, and Splash is one of the best rides on the planet.
What MK has, and all DL style parks have that others just don't, are a ton of things that aren't headliners. The small Fantasyland dark rides and such that newer parks were kind of never designed for and built with.
I'll agree that's unfortunate, but I personally don't see MK's headliner offerings to be all that much more diverse than USF's. It's just that USF is all headliners, which is just how that park was designed.