The thing is though, this has been the plan since the 'Elite 4' days and it was definitely mentioned during the Kickstarter. Whether it actually makes it into the game is another discussion entirely, but it's definitely on the cards perhaps 2 or 3 years down the line.
I think that's a realistic timeframe to introduce this kind of element, any time sooner and there's a risk of losing focus on the core of Elite itself.