1. Can I use OpenGL 2 or 3 with Banshee engine? Can I use it with editor too? For instance I can't use Unreal Editor without modern graphic. I hope in your engine will be some option to run editor without some graphic features (OpenGL 2 or 3).
2. Can I code game with only C++ with this engine (inside VisualStudio) and use editor for build levels?
3. Can I integrate / use other GUI inside engine? And how hard it can be for beginner (I am not fully beginner maybe little advanced) in C++?
4. Why NVidia Physics instead Bullet?