Not sure if this has been addressed yet but I'm sure it has:
What prevents me from simply calling my friend up on the phone as I'm spectating and telling him ALL details about his match? I understand this would be why Riot chose to exclude chatting in game while spectating but c'mon, even with Skype & Vent this is ghosting on CounterStrike all over again. The worst part is this couldn't even be addressed 'cause how can you TRULY know if someone is ghosting or not? Some plays could just be good awareness, others pure luck.
My suggestion is to make it so when spectating your friend you can ONLY see what their team sees - and enable chatting with friends while spectating. I'd like to say that people would have the decency to leave good ol' competition well enough alone, but c'mon now we all know that isn't the case.
Thoughts? Comments?