Just having less painful compile times at the start of projects is so nice. When I was using Unity even simplistic projects felt like they took forever. Even dotnet godot projects get running faster on average in my experience. Though sadly current c# godot projects cannot export to web. And even though projects can certainly slow down as they get bigger, at least getting bootstrapped is less painful (I haven't built anything of significant size, biggest thing was a jam game with one moderately sized level that loaded up pretty fast but I also cheated with a single bit of geometry for the level).