Somehow I didn't notice the folder feature before and it's a gamechanger for the erase blend!!! I've just realized an inverted version of that blend called "Alpha mask" or something like that would be enough to make it more functional (and it would hopefully be easier to implement? I have no idea)
Edit: Nevermind, I thought folders would limit the layers that the erase blend would affect. I guess that would be its own request 😓