I think Sega is bringing over 7th Dragon simply because they're slow as shit at localising games, and if Sega was not bringing 7th Dragon over to North America they wouldn't have cock blocked another publisher from picking it up for release like Nintendo or Bamco. 7th Dragon is the perfect kind kind of game for niche publishers like Atlus, Xseed or *shudder* Ignition, if it was up for grabs we likely would have had some news by now. We also have Dragona's promise of "soon", but that's months old ;P.
If you're despairing about never playing 7th Dragon you can import the game from your online retailer of choice and use this
wiki to muddle your way through. It has been updated periodically and has pretty decent break downs of the missions, quests and skill sets of each job class.
/7th Dragon tangent.