or complete some c++ tutorials when I started to explore esenthel engine, it was a great motivation to read through some c++ tutorials, to understand better its programming possibilities. there a lot of great ones, somehow I like it batter than C#. but I have very minimal experiences in c#.

maybe there are other engines on the market that suits your requirements better, if you don't want to dig deep into programming. or move towards to be mainly a level designer, and try to find/establish a developer team. but in the latter case, some programming skills are quite useful.