Add a option that let you choose if you want to make your hero invulnerable and unable to move or be controlled by other players when you are disconnected,this will prevent intentional feeding or stat ruin if you are playing with some rage kidz.
Edit:You need to be in fountain to become invulnerable.....
..oh i could die -> disconnect
..tempest Ulti -> disconnect wait a few sec reconnect
no no no
My Suggestion to make the HON community more friendly give a coin to a nice player "the ty button"