Just finished a few of Kaan’s Godot courses, which were excellent. For the mobile course it would definitely be beneficial to add a section on how to implement ads like the Unity mobile course has.
It would also be great to see a course on implementing multiplayer in Godot including functionality like online leaderboards, a chat system, and some more obscure topics like dealing with cheating and banning players.
These topics in addition to what you’ve already covered for Godot mobile would help us create more fully-fledged mobile games.