The resolution of the LCS stream should be higher.
I understand that Riot is afraid that many viewers don't have the internet speed to watch a higher quality stream.
Regardless, then the in-game resolution should be higher than 1280*720. With a in-game resolution this low it's very hard to see details and player names and health bars are too big. The picture is very noisy, basically the opposite of what Riot wanted to achieve with their "Clarity" program.
Edit: My stream is already set to source quality.