What dota has that league should have.
Leaving game after one afk's or quits Dota has a ability to leave game if one leaves. This would be nice in league considering it can cost you a loss and a waste of time.
Voice chat Creates the ability for a pub matchmaking to have the ability to communicate and possibly cause better gameplay in ranked and normals. YOU CAN MUTE.
Pinging on abilities to show in chat how much time you have left. This would help significantly on letting players know that you have this long tell you can use it. This can help with when the right times are to engage and many other reasons.
Pinging on champions to show in chat that they are missing. The missing tool that you can select is already helpful but being able to show on chat what champions are missing would be even better.
Coaches If league had coaches that would help. It could give an oppurtunity to have lv. 30's help lower lv friends and something you can do if you dont have enough time (dota lets you leave whenever you want to).
These are the main things that league should have. There are many others but these seem to be the most significant ones. Post other things that should be changed that I didnt include and also what you think about them.
Thanks, Fearless24