To be fair, the Battle Tents were never touted as the greatest successes to come from Emerald outside of the actual facilities and the plot, while Contests actually were rather successful. In that regard, even if the BF does make a return, I would be surprised if they actually considered bring back the tents as well. Besides, with everything unique to RS (Wallace as the gym leader, the lack of any indication that Groudon will be in Mt. Chimney, the screenshots supporting the idea that we'll end up siding with one of the teams, and so on), it was always fairly evident that ORAS would follow RS more religiously than Emerald, if only during the main game. The post game, on the other hand, is free for them to do whatever they want with it, whether it remains faithful to the originals or not. We're going into space now, aren't we?
This being said, I'm not going to take the absence of Scott as the guarantee that the idea of the Frontier is dead. The demo dumps indicated a Battle Resort; as we don't know whether it's another Maison, a Tower remake, or a fully fledged battle facility, the only thing that we can say from his absence is that his character isn't as relevant to the post game as it was in Emerald, if it is at all.
Also, Karxrida, while I do agree with you about the handling of spoilers, I feel that I should say that it's not that easy. The trouble, at least for me, was when my own damnable curiosity overpowered my resolve to avoid everything relating to the demo spoilers, something that I still haven't forgiven it for; I'm sure that I'm not the only one. But yeah, if you're still here, even after the mess with the demo last month, then you shouldn't be complaining about spoilers. If you still don't want them, then just back out now until you can get the game yourself. If you're like me, though, and your curiosity is strangling you for control, then just take everything you see with a pinch of salt, and tell yourself that it's just the internet, and that nothing on the internet relating to 4Chan (and remember, every leak is from 4Chan) is actually true, and it might help take the edge off. Remember, we're in the final stretch now; it'll all be over soon.
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Just take my money already, Nintendo. Please.
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Stupid Late-Night-Before-Test anxiety. I'm rambling.