Skimming through the new features, I'm looking forward to the new "Game" tab in the editor (
https://godotengine.org/article/dev-snapshot-godot-4-4-beta-...). Being able to easily select and move around the camera/etc. inside of the running game is the main convenience feature I missed from Unity. (IIRC it was still technically possible by tabbing back into the editor and editing "remote" inspector properties, but far more awkward.)