It already is pretty darn performant - but without the many convenience features unity and unreal have. Also it does lack means to modify vertex buffers directly on the GPU - a feature I liked in Unity (https://docs.unity3d.com/ScriptReference/Mesh.GetVertexBuffe...). However, I think godot shouldn't try and implement everything - the project should focus on getting core functionality performant and flexible enough.

Everything else - managing massive world, etc, should be done by 3rd parties and monetised. I hope the game dev world wont take the web dev world path where code is in oversupply and there are little options to monetise.

Unity's asset store allowed many people to gain freedom by selling assets. I think godot should follow the same path. But indeed for that the engine needs even more low level access exposed in a nice manner.