I don't think that was the reason at all. They were made as the video said, to let people get access to those Pokemon in the Red/Blue and Gold/Silver.I'm not sure that we'll be getting Hoenn remakes, it could really mess up the timeline.
http://www.youtube.com/watch?v=4Z4zEBloxmE
Gen I and Gen II had remakes for a reason, to give the games proper continuity and not contradict newer games at every turn. Gen III remakes would have no purpose and be counterproductive to what Game Freak have done, unless of course, all they did in the remakes was update the graphics and mechanics and keep everything else the same, then that would be fine.
That's one of the reasons why I'm kinda doubtful that there will be Gen 3 remakes. Every Hoenn Pokemon is able to be transferred over. Then there is the fact that FireRed and LeafGreen are also a part of Gen 3. Would they receive remakes as well?
Only reason I could think of for doing it is money.
Yea, that Strange Souvenir thing is pretty strange. I wonder what it is supposed to be. For all we know, it could be spin-off related, but I doubt they would mention mainline games' regions if that were the case.I think the next game, whatever it may be, will be out sometime in 2015. At least in the US, there's been a Pokemon game out every year since Platinum was released, and I suspect with the worldwide launch that's going to slow things down a little bit. I wonder where the Strange Souvenir or whatever it was called falls into this, though, because if I remember correctly it wasn't from any region we know about and I doubt we'd have to wait until Gen VII to figure out what the deal with that is.