I feel like creating things without getting too hung up on little details, and paying more attention to the importance to the concept itself, is the way to move forward.
Unfortunately, it's not that it's not impossible for us to develop Final Fantasy 7 for mobile. It's that currently, space will be an issue. Phones won't be able to contain the space it takes. It's over a gigabyte. People are probably going to have to wait a few years.