I heard Chaox talking about how NA players watch the EU LCS and I'd presume the opposite also occurs aswell as them watching each others games on the days they're not playing themselves. Obviously these players have top knowledge of the game and would be analysing the games of the teams competing while they watch.

So basically my idea is that they could stream just audio of them talking about the game and what their take on it is. I remember Snoopeh doing a twitch.tv chat commentary for some tournament not too long ago and that was brilliant. Obviously you can't restream other streams and it would be wrong to take viewership away from Riot for their own event but I think it would be ace for the top players with their insight to do just some audio that we can listen to alongside watching the LCS!