Could it be possible...

[Sydian]

If they did that, I think it would be pretty cliche. It's already bad enough that the player gets the chance to catch multiple legendary Pokemon, but all of them? And tackling four teams in one game? Bleh.

 

[Luck]

It'd actually be pretty boring.
i wouldn't want to go through every region i've been through before, it just sounds so boring.
but if they do, i hope the professors take our pokemon and only allow them in their region until all the E4 are beat.
It would seem dull fighting archie and cyrus with the level 99 venusaur that i got from the first region.
and they would have to make it pretty hard to level up, that or change the level limit to something above 100.
either way, it sounds as likely as nintendo giving up on pokemon altogether.

 

[boss jr.]

Yes I think it'd be possible if they made it for the wii & didn't concentrate to much on graphics!

It'd also bee cool if you could choose your reigon!

At some point you'd battle the trainers you could have potentially become had you chosen to start in that region!

Only the legendarys & starters in the region you started in would be available forcing you to trade or replay for the rest (saving your box data to the wii system memory & making it available only after you beat the e-4)

Though you may still travel to other regions the teams there & story would be completed already, making it purely an exploration issue & not part of the pertinent plot!

See, that makes it 4 games in one and forces hundreds of hours to be wasted on the game!

 

[Legobricks]

To have the ultimate RPG of pokemon with all four regions, Team Rocket/Magma/Aqua/Galactic, and all legendaries?

Kanto, Joto, Hoen, Shino, Orange Islands, Nanashima.

I count six regions.


Putting all the teams together could make for an interesting story, great power struggle.
All legendaries obviously comes with all regions.

 

[Luck]

Uhh... Johto is not going to be in Platinum. It's common sense. ;x

To put together all four regions with all of their information into one GBA / DS Game is impossible. Such a small device can't store that much data into itself. Unless they invent a Gaming System with a gigantuous game cartridge, it will never be done.

you are right, but what if they did what happened in the PS1 days and made seperate discs for it?
one for each region.

Kanto, Joto, Hoen, Shino, Orange Islands, Nanashima.

I count six regions.


Putting all the teams together could make for an interesting story, great power struggle.
All legendaries obviously comes with all regions.

you also forgot the spin-off regions, such as orre, fiorre,sevii islands, and whatever place mystery dungeon is in.
sounds like a whole lot to do.
and even then, there is the unofficial cities that only appeared in the anime, if following the anime.