Too much of the same champs

Hi Riot, I've been watching NA LCS all of this year and something's been bugging me throughout the year:

It's always the same champs being played. :/ (Not literally the same 100% of the time) I find myself skipping the video altogether when the team comps are: Gnar, Evelynn, Viktor, Sivir, Alistar vs Rumble, Rek'Sai, Corki, Kalista, Thresh (Ok, so I'm not good at understanding/guessing team compositions)

I mean, nowadays, you can't see a game without a Kalista, Sivir, Corki and/or Kog'Maw. (Like, legit, I'm sure there's a game with all 4 of them) When Ashe got reworked, she saw a bit of play, there were maybe 1 or 2 Gangplanks after the rework (I think it was overseas, tho). My point is, I feel like there is a lack of variety when it comes to League as an entertainment medium. Sure, it's awesome when someone pulls off a 5-man Gnar ultimate... but you see those almost every game in the Summer finals. I feel like this could be helped with some more bans? I see those flying around on the boards and that could lead to more interesting team comps. Think something can be done about that? I want to see more diversity in LCS! (TSM!)