Godot makes it easy to isolate pieces of your game
One feature that Godot provides out of the box is the ability to run any scene in your game in isolation. The whole game or any part of it runs as a 'tree' of scenes, with a root that determines what all the contents are. This makes it trivial to run just they Player or Mob Scene, or a quick one-off level with one of each of those for testing some new mechanic. After getting things off the ground with love2d in my vapor/beatemup game, this was the thing I knew I'd want the most, but it'd be quite a bit of work to build from scratch. Thanks godot!
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Godot has some awesome things going for it, but one thing I'm excited to try is treating each of my projects as a sandbox for content. Rather and an ultra dry game project with only the necessary assets, I'd like to really get dirty in them, adding one-offs and too many levels and enemies, exploring and researching ahead of filtering/deleting. Just get in there and try stuff, and take advantage of godot's ease of run-just-this-scene. That isolation is a huge boon.
Given the isolation and advantags of godot, it feels like it'll always be useful to spend time creating in a godot project - it won't get in the way unless you move it there. I want to push my work in this direction, and get away from fear of creating projects at the wrong slice/level. Just give me somewhere to create that won't go to complete waste/be unsharable.
Feels like a similar approach to mind-gardens - I feel free in here to drop lines and leave them be. A place to be expressive.