@pancake Aren't IDA scripts/plugins closely tied to (main) versions?
I'm all for self-explanatory API's, but you should keep in mind that you have a lot of context to build on in case of your own project that others may lack (as a general observation, I'm not familiar with r2's API).
Re: Ghidra I think it usually comes down to a Java vs. The World thing, and once you accept the fundamental paradigms the API is reasonable. I'm curious though about what you find overly "simplified" there?