As a fan of both the DS and the final fantasy series, I can not help but want final fantasy 7 through 9 on the DS. One might say "why would you want this to happen?," well, I have played the console versions to death and now would like to take the games on the go with my DS instead of the PSP.
I have a feeling that once final fantasy 5 and 6 are realeased for the DS(if, not when) Square Enix might give these games a go ahead on the nintendo system. However, Sony may own the publishing rights to these games, but Square might be able to work something out.