In the context of how atoms work without having electrons that lose charge and fall into nuclei, how different atoms absorb / emit different colors/wavelengths of light:
The simplest theory is that they just are this way. Just fix up the existing "codebase" to accommodate for this observed fact. So they just said electrons has discrete energy states and orbits to choose from.
It's literally the simplest way to accommodate the observed fact that electrons do not fall into nuclei.
It led to super complex Maths and predictions about black holes, and seemingly conflicts with general relativity. But, Can you think of anything more intuitive?
Hence my desire for an intuitive one.
(But if you are curious, the idea is that space is divided into chunks. Crossing chunks or propogating EM/gravitational fields through a chunk causes a delay, which means the particle's inertial frame loses time. And even if particles are traveling at infinite speed inside a chunk, that delay causes an effective speed limit. That's the speed of light. Similarly, there could be other ideas that also "ports" the entire spacetime theory onto quantum.)
Rather, it feels like gravity is special and the chunks of spacetime themselves are carrying information about the gravitational field.
My imagination is odd because it's based on how I would write a distributed game server. (It doesn't make sense to simulate gravity pairs between every single pair of particles. This isn't just slow, it doesn't scale if the universe expands. But it makes sense to precalculate gravity field as a chunked map and then update one chunk at a time.) (You can ask the same about light/EM but light hits only some of the things and can cause complex local interactions at the scale of electron orbits. When gravity changes, it's very macroscopic instead. So I wanted to treat them differently)