Exploring Mauville, I couldn't help but notice that Pokémon has started to show some growth pains as a franchise. Namely, legendaries requiring a way to change Formes have begun to demand a lot of locations specifically dedicated to them. There's a mirror shop dedicated to the Genies. A couple of blocks away, a shop exists exclusively to tutor Relic Song and Secret Sword to Meloetta and Keldeo, respectively. Not far down the street, a guy is "waiting for Genesect". Deoxys requires there to be meteorites present in the region, whereas the Gracidea for Shaymin or Rotom's crates can be put pretty much anywhere. GameFreak appears to have settled for the "it's just lying around in some corner" approach to Kyurem's Gene Splicers and Giratina's Griseous Orb already.
As the franchise progresses through generations, I can't help but wonder how this will be in the future. For every generation, the games become increasingly complex, with more and more tiny elements requiring a bit of the programmers' attention. I'm afraid Pokémon is starting to show signs of "content inflation", and that the games can't keep doing what they have always done in the past: piling up new things on top of the others, and paying an equal amount of attention to everything. It's not hardware limitations, it's developer limitations (and also player limitations, eventually: By now they can apply the "gotta catch 'em all" slogan to Legendaries, but not realistically to every Pokémon species).
In short, Pokémon isn't infinitely scaleable.
It's not that I'm worried yet. Gen. VI seems to have acknowledged the problem, by reducing the number of new species and legendaries introduced in a generation, instead developing (major) new content to brush up existing Pokémon. It's just that I think ORAS is the first game where the sheer scope of the existing content is getting obvious. This, I guess, is mainly because the region has already been designed, and they can't just cram in new tutors in old places wherever they want. Designing a new game, you can make an entire town dedicated to brushing up old content (such as legendaries), but in remaking one you have to place it within the pre-existing world somewhere, without deviating too much from the original experience. GameFreak decided to go for the third option, re-designing an area entirely, and dedicating a fair amount of it to old legendaries. That's why it's so visible in ORAS. I think the inevitable Gen. VII games will be a lot more subtle about it, but it might be back in full force if they decide to make another remake.