What's really nice is the notion of scenes which I prefer to the way scenes are handled in Unity. Scenes in Godot are are simply node-trees which you can instantiate in existing scenes. For example you create a character in a single scene which you instantiate in a level scene. I always had the impression that this favored encapsulation compared to highly interdependent components in unity.
What brought me back to unity was 3D, scripting and debugging. 3D in Godot feels limited. Shader graphs are not really usable, yet. It's a lot simpler to create something nice in Unity with the standard shader and some assets. And well, the debugger, it's simply not comparable to Visual Studio. Variables are sometimes not inspectable. I missed refactoring alot. And sometimes you need to dig very deep to understand how stuff works because many things are not yet documented.
All-in-all, I love Godot. It's a nice cross-platform development environment. I simply hope that I can come back later when all rough edges are gone.