Let me ask you this. Why is it a better idea to rush R/S/E remakes for a system that's about to be retired? The Legend of Zelda: Twilight Princess had built a huge amount of hype, so Nintendo used it as the introduction to the Wii. Great strategy. This is why that game's release was pushed back for the Wii, so they could save it for the new, better system. I don't see why remakes wouldn't do well in the same situation. The 3DS holds all kinds of potential for future Pokemon games. Why not wait a little longer and make these remakes even better?
Did you read some of my last posts though? I posted about how I'd expect them to be on the 3DS as well; It's odd enough how we still have to wait for DS games(BW2), but that's understandable in the sense that they want to keep the Gen together.
I'm more questioning on when they'd want to release the games(RS remakes, if they truely are), like a lot of us are. By the time the hype and craziness of BW2 wears off, it should be around the two year mark since the 3DS' release, which seems to be GF's hotspot(and a good spot anyways, so they can get to know what they're working with) now for releasing games on the latest system. By the logic some have on this, we'd have the start of Gen 6 around that time as well, which would mean a new pair of main series games; but wouldn't that be way too early/soon for something like that(mainly considering the rest of the world isn't even getting these BW sequels til at least sometime in fall)? That would mean that they would either wait a bit longer or put something to fill in(perfect for a remake), but that also would be odd as a new Gen starter.
One of my interests with this is what the heck they will actually do to kick off the next gen, since it seems like it could go any direction, with this one being a speedy one and ending sooner.
As for remakes' platform:
Most people were so convinced that Unova's next game which is B2/W2 will be released for 3DS. I never liked idea of splitting gen 5 between two consoles and I was right because B2/W2 are confirmed to be for DS. And I think R/S remakes will be for DS as well. Imo they will be part of gen 5 because B/W have technical similarities to R/S/E. Gen 5's engine looks like was prepared for R/S remakes. Ignoring that preparation and making remakes for new 3DS' engine would be so illogical and mean waste of 5 gen's preparation for remakes.
The only way I would see it a waste is if you're referring to the new sprites of Gen 3 Pokemon(which doesn't really make sense either as I can't see a remake, if it were for the DS, to use the EXACT same sprites for a previous game; would take away from it's new feeling). It also would make sense in the way that, although BW is prettied up a bit, it wouldn't look like too much of a change from the originals; they would look just a little prettied up as well, but flattened out a bit to give it that semi 3D feeling DS games have. You yourself seem to be one of the many Hoenn fans, so, Hoenn fan to Hoenn fan, I have to ask you: Don't you think the region deserves better than the DS has to offer?
I don't mean to shoot down them coming out for the DS, because we can't know 100% at this point, but imo, what better way to give the Nature feel Hoenn has the justice it deserves than to actually have it in a real 3D environment(rather than the semi 3D the DS has)? Also, like has been said before, around mid '13 is when the whole BW2 games craziness should calm down, so wouldn't that be dragging the DS a bit too far when it is already trying to die down; BW2 is already stretching the limits with this(understandably).
Btw, what exactly is illogical? We've had items programmed in games with no use until a fair bit later, etc. I'm all for having them asap too, but I would rather wait for them to be on this gen's system.