Hello man I don't think someone want to do this thing because an export means final build of that particular period and you can't just debug the game properly. I haven't tried it. So sorry if i misunderstood.
Viewing post in Export On Save addon for Godot jam comments
My motivation for this plugin is developing WebXR apps, where you do need to export in order to test, and I'm constantly forgetting to export. :-) It's pretty annoying because I'll put on the VR headset, reload the page in the browser, then wonder why my changes aren't there only to realize I forgot to export again! So, I gotta take the headset off, export the project, then start all over again.
I don't know if there's another use-case for this... Maybe if you're doing repeated tests on the release build and you're sick of the ~5 clicks it takes to export every time?
Anyway, I know I'm going to use it!