I don't see anything wrong with reusing the same settings and groups, although if you have something in mind then by all means go ahead and use it. Sometimes a small change for a reboot isn't a bad idea.
As far as the storyline goes, I say you keep it more or less the same since it was never completed. That's just my opinion though.
As far as the storyline goes, I say you keep it more or less the same since it was never completed. That's just my opinion though.