Orlando is out of the question, because we already made a version for FSX. There's no way we'll ever do a scenery for FS9 only, considering is slowly going down month by month, and if we make a scenery, we intend to sell it even 3 years from now.
Miami and Amsterdam are surely more interesting, because in this case we would do just the FSX version, since the the already available FS9 versions are not that outdated and, in case of EHAM, we are not supposed to directly compete with Cloud9 on FS9, as part of our agreements.
But, in order to do an FSX-only aiport, we need to wait for the remaining FS9 user to finally move away from it. However, KLAX in this case would be more likely than KMIA.
So, basically, if we have to do an FS9-only scenery: no way. We are more willing to make an FSX-only scenery, but just not yet.