There is a way to save Twisted Treeline Riot, Mort
A few weeks ago, my team published a month-long's worth of work as a proposal. We all understand the issues with Treeline and we carefully analysed all of these issues and provide meaningful, fail-safe solutions which would have worked.
I don't think any of us expect TT to be as large as SR but the minor gameplay updates to it, along with our promotional ideas would have lead to a massive increase in popularity and sizeable increase in revenue generated.
Why not test these changes this preseason? Keep TT around for at least 1 more year and keep us informed of how the effective our ideas are. We're confident you'll change your minds about TT after seeing our ideas generate popularity and revenue, for you.