alt Hacker News> Why do I even need to use the Unity3d editor for this? Why not store everything as code instead?
Some answers are... you need to recompile ever time you want to iterate on the data. You need to do a full reinstall if you were doing anything past play in editor. You need to do a week long store update if you actually shipped a game on an AOT only platform.
But yes, Unity assets don't support polymorphism like this. The data container needs to get massaged a bit.
In this case I'm still converting to assets so I can ship asset files in future updates, but yes play testing, while doable on the editor, has to be recorded in code as well, which may not be as accessible to a non-technical designer in the future, but that's for future me to solve (maybe at that time i'll finally have time to write a fully custom inspector for this) :D