Nah. The motivation would have to be profit --- i.e., a new game that could be sold to many people, not just the old die hard fans of DX1.
It'll probably happen someday, but not in the form anyone expects. Probably as a small part of a much larger package, where you can go through the story as multiple characters, with even more options, on a level of interactivity that's just not feasible now. It would require an increase in gaming technology that would alter the whole equation of profitability, where catering to the fan base of smaller, more dedicated "cult" games becomes practicable.