first off i <3 spectating mode, its really nice to watch pros play and watch friends play to learn from people, but one thing would be to add is being able to spectate games that your friends are spectating also. Example, your friend is spectating a game, and you want to also spectate but you don't have the person they are spectating added on your friends list, it would be nice to just right click your friend who is spectating and just click "spectate game" and watch the same game.

just an idea.