There's a number of things they can do without being hurt, like making it 720p rather than 1080p. This would help with the pre-rendered cutscenes specially, which I assume there will be many.
The different dubs can also be available to download optionally. As most people do not care about that, but they can still make it available.
It's really not that hard, fortunately for Microsoft Square-Enix is REALLY over-serving and over shooting with FF XIII on PS3. They can cut down on a lot of stuff with little notice from the public.









