Was bored and got sidetracked yesterday, so here's Schema integrated into my Sapphire toolkit, with live-editing support.
Schema is basically my own visual node system integration written fully in GDScript with a bi-directional system, so if you write GDScript, it can also get automatically represented in Schema, and vice-versa, you can place and connect nodes in Schema, and the GDScript gets updated to match your graph.
I've put this off last year in September, but I finally fixed some of its quirks and it's now a workable state where I can add stuff to it quite easily.
After I release PRISONIA in early access later this year, Schema will be accessible as part of an update that introduces a mod studio that lets you create your own game mods directly in the game using GDScript and Schema, depending on your preference.