Champion Tokens and TT

This is a very straightforward sorta question. Why are we unable to get champion mastery tokens for Twisted Treeline? It's just as challenging as Summoners Rift, but with added challenge (E.g quicker reaction times and requiring more champion knowledge to do well.) It even has its own ranked pool thats separate from 5v5's.

There is no reason to not allow people to get mastery tokens in TT.