I will keep testing more as well and then upload a version that includes this since I do think it should be a feature! Thanks for pointing it out
Viewing post in Choice Kwargs For Ren’py comments
I updated the code and added an extra feature where you can write in a different tooltip message for when a choice is disabled vs. not (which I thought might be handy for this use case), which is up now!
The main difference from my pastebin code is just that the styles for disabled choice buttons are now consolidated with the other styles rather than handled in the screen.