Question regarding Match History

First of all, I consider this a question regarding a replay spectate mode. Please don't summarily delete my post.

Riot, will you ever add the ability to spectate a game from match history? It would be awesome if I could go back and watch a match I did well on to reminisce, or to watch a poor performance to see where I could have played more soundly. I realize there is the lolreplay 3rd party website, but I really do not like downloading 3rd party mods/programs for games. It would be much more convenient if you had that functionality built-in.

Also, if a player was spectating a game this way, you could say "Spectating Replay." Other people on that player's friend list could right-click and spectate the same replay with them, etc. It would be really nice.

Thanks for your time.