^ This right here pretty much just sums it right up!!! I actually think its a brilliant idea. It doesn't mess with the basic plots TOO much, allowing for a "mini" reboot without risking fans flipping a lid because they made Blue into a ditzy girl, conpletely remkved rhr type system or stuff like that.
Don't think too hard about it guys, the changes they are making are minimal and I'd say most of the canon still stands. Its just adding mega evolution, and explains slight changes like no s.s. cactus and the new mauville design. The time line is still set in the same place... Its just slightly altered. The events that happened in red, gold, etc are, for the most part, the same. They might remake those games later, adding inmega evolution and their own little twists,but they will probably mostly be slight aesthetic changes to the region and why we don't let kids gamble anymore.
In fact, it lines up well with RSE, because they were already operating with the "multiverse" theory with Ruby and Sapphire. If anything, its a brilliant expansion of the idea. Ruby is an alternate universe to sapphire, after all, in one team aqua is the good guy, and in the other its team magma. I'd say thatvplaces it even before black and white. Then there is Pokemon mystery dungeon and conquest, but let's not get into that