Comment by WillAdams

I wonder the same thing, but with an emphasis on app mobile development.

Godot from project setup to running on my Android is way more effortless/lightweight experience than doing the way of AndroidStudio and/or Flutter stuff.

What I dream of is making a Lua binding for essential godot GUI control nodes using GDExtension and using this LibGodot to own the engine loop, so I can do all the app code in Lua.

So, I may have drifted away from your question, but the point is that I love Godot for gaming, and I can handle GDScript plus the engine editor, but for writing a complete application I would want to develop in my language/editor/ecosystem of choice.

In that sense, LibGodot(plus GDExtension) may help indirectly developing GUI applications by letting people own Godot in their ecossystem of choice.

I'm working right now on an app in Godot to support a tabletop game. Their UI framework is pretty nice IMO. It really helps that the editor itself is made in Godot, so they have a lot of real usage of their UI system already

They just added docs for how to best achieve GUI apps.

https://docs.godotengine.org/en/latest/tutorials/ui/creating...

They made improvements in visualizing margins for Margin containers. A small but very useful enhancement.

I don't know about the new features, but you could definitely make a drawing program in Godot already. There are a couple really good RPG map-making tools in Godot, and that's basically a drawing app where your brushes are trees and buildings