Games like league rely on micro transactions and merchandising to make money, additionally a new patch roles out every 14 days keeping the game fresh. Riot has 0 incentive to make LoL2: electric bugaloo.
I guess what drove that statement was the StarCraft -> StarCraft 2 transition, both of which are shadows of their former selves because the business model of a game publisher is not that of a sports league. They have conflicting needs.
I felt like Grandpa Simpson: "I used to be with it but then they changed what it was."
Frequent tweaking might be great for active players but I think it will be a pretty big block to ever allowing esports to compete as a casual viewing event alongside regular sports.
[0] https://www.reddit.com/r/smashbros/comments/1qixpa/the_year_...