For example: There are the Faraway and Southern Islands of Hoenn, for Johto there is the Sinjoh Ruins, and for Sinnoh there are Sendoff Lake and Turnback Cave.
One could assume from the fact that Latias, Latios, Mew, and Arceus are all not at their areas that it would be fine to make a team there. A place such as Turnback Cave, though, might not be allowed due to the fact that Giratina is still around. Do you get my point?
I'm just trying to plan ahead for a future team, and wanted to make sure the efforts were not wasted :b