Have u guys seen this it's called the forge its a next gen rendering engine that can be used as a building block for a engine https://github.com/ConfettiFX/The-Forge
We're happy with our own rendering engine :) Swapping it out would be a lot of work for little to no benefit.
Godot's rendering engine is becoming much more capable with Godot 4.0, which is slated to be released in 2021.
Ok