I like it, drawing stuff around can get tedious if an engine like this can do it "automatically" when adding more stuff instead of copy-paste-move.
As a compiler writer I'm pondering if it'd be possible to parametrise to a degree with data-sources or you think that's something better suited to custom script generators (right now, it feels like you want to write a lot of this manually, but the grouping system does lend itself to wildcard expansions from data.
That's an interesting idea. I already have planned for some programmer-like features (functions, custom attributes, variables). However, what you're talking about seems like maybe it would want to take in an outside file (e.g., CSV, JSON) and say "loop over every entity in add as a child in this container", that sort of thing?
Am I getting that right? Super curious, because that sounds cool.