@Rethel34Hey Reth, as far as changes to the world of Pokémon goes one has to remember that the series has been going on now for 20 years.
That's pretty god damn impressive for a game that is literally almost a carbon copy of itself every generation - the only thing keeping it fresh is new Pokémon and new features - Mega evolution is one that was a very big step, that ultimately proved to be very successful, equally so was the fairy type.
So.
When it comes to these new changes that are coming in, its worth waiting and seeing before judging, no doubt we will be pleasantly surprised as the Pokémon company has seldom ever let down its fan base.