According to Riot, they believe the game has lots of variety
At least that's what they say in the preseason gameplay goals:
"Two of League’s greatest strengths are variety and mastery. Variety is one of the true foundations of LoL, where the huge roster of champions creates 824 trillion unique possible matchups—and that’s before runes, items, or Summoner Spells."
I would laugh if I wasn't so disappointed in Riot.
Yeah, that's a load of bullshit. Hard to believe that when the same 30-40 characters keep getting played and they are all forced to build the same thing or suffer from being suboptimal when item and character disparity is as severe as it is right now.
I refuse to believe they believe this. Only an idiot would actually think this is true. I'm more inclined to believe they're just saying that so they can save face and have something to say in preparation for preseason. How can someone that's so out of touch with their own game expect to be able to balance it properly?