I am happy you like it! The main idea of this template is that you can build your levels and your own game mechanics without having to write all the code from the beginning.
That said, I have some ideas to improve this template in the future: stairs, jump, secret areas, color keys to open doors, statistics at the end of the level (elapsed time, enemy killed, secret areas discovered, etc.), elevator lifts and switchs to open doors to mention some of them.
Don´t expect it to be soon though...