6* Concerns

So with this new change to the featured 5* crystals coming up and 6* champions on the horizon, what will we see next? With 5* shards being easier to get lately, it makes me wonder if with the increase of 5* shards and 5* crystals we're pulling, we'll eventually start getting more and more 6* champs in the same way. Will we get more ISO for duping 6* champs than we do for duping 4-5* champions? At what point will we begin to see featured 6* crystals and see the base 6* pool grow? Will it be in a similar way as the 5* pool is growing currently? Or will we have the old featured 5* crystal system in which the featured 6* champs will only come around twice and then possibly never again except in the subfeatured pool (if the subfeatured system is added to the featured 6* crystals)? With 6* champions closer and closer to being fully released I think it'd be nice to have some clarification as to what direction the game is going after 6* champs are released.