You likey Arceus Plates? Hm . . . erm . . . we could still integrate those . . . um . . . once we figure out what we're actually going to do, lol.
Ooooooooooooooh, maybe the Arceus Plates are needed to um . . . well, summon Arceus (or at least his powers) and restore the world to its former glory, if we take things to the extreme of "The Great War" that Blaziken15 just described. That way we can be in a world that is kind of . . . wrecked, but the RPers end up restoring it or something in the . . . actually, in the sequel, as what you mentioned was there only being a certain number of plates in each region. 3 RPers = 3 Plates. That's 15 plates, and the final one could be in the sequel?
"Region Reviving Competition" . . . why am I not sure what you're talking baout? Lol xD
Well um realistically speaking, the plates can only be found in Sinnoh. You need to give a good reason why they have been magically moved to other regions. It's not like they can walk on their own and they've been buried underground lol. xD
Region Reviving is exactly this sort of thing. Region goes into war, big boom of death and poverty, region is destroyed and then region begins to build back up. See how exactly it is with this Great War idea?
I'm not a religious person at all but is that too touchy of a subject to meld the ideas together?
But I'm sure it will work if you possibly make up a different religion all together and nobody has any reason to say anything against it. =3