Since Godot is becoming more and more successful, some have moved from Unity to Godot and with more and more people on board, its future is looking promising!
I think it would be good to take an interest in it and move to more courses on the subject!
The first thing I thought about was some Unity courses from Godot’s pespective, with GDScript and its own tools! I’m thinking of the Game Feel course, on how to produce game juice in the engine, the Shader & Dynamic FX courses, which would be great to know how to do and how things work in Godot too and for those that plan to use this engine forward and not wanting to go in Unity or might be intimidated by something more complex (I suppose? 
) like Unreal 
