As an old washed up league player your game really hits the spot and I enjoyed playing it so much! I would like to give some thoughts and suggestions, but please do not take them negatively to heart. It is your game and you worked hard on it and it is evident when playing. I just wanted to share my ideas. If you don't care for them then stop reading after my next line. :)
Thank you!
I think an initiative mechanic would be very beneficial. Having slow ganks vs fast ganks would add a lot of strategy to jungling that is missing currently. Also I feel that returning to lane stopping the entire enemy group in that lane is two strong. I would suggest that it stop 2 enemies in that lane instead of all, or it could even be different for different top laners. For instance something like returning to lane as x top laner stops one enemy and gains one xp instead of stopping two.