There is no notice to you whatsoever if you get kicked. They need to implement a notification system that tells you why you where kicked and if you wish to contest the action by the other players. Now all they have to do is mark something like that the player is AFK or Offline and you are gone. Perhaps the system could pop up a message at your end stating that if you do not hit the disagree button within 15 sec you are going being kicked for inactivity or that you are being licked for some other reason and give you an opportunity to write a short response to the event.