[badsectoracula]

TBH if i was making a game using Godot i'd just be modifying the engine itself to add any "heavy" functionality (the nodes system would most likely help here) and expose custom high level APIs to GDScript. IMO scripting languages should be used to script the behavior of a game: i.e. tell the engine what to do, not how to do it (which should be written in native code).

From the subreddit submission about this blog post (linked in the post itself) it seems this is something some people already do.

The GDExtension API seems something to use only if you want to write C++ extensions/plugins to be usable by other people, but i don't see much of a point in restricting yourself to it if you are making your own games.