With the exception of random event generation and other similar variables, the rules would be as close to Pantheon's as I can manage. This isn't to say it's open-ended like Purgatory, but some things might come down to accepting the GM's decision. Also, since we're dealing with a much smaller setting, what you can do with your DRP will probably be more limited than what we're used to. Social engineering and minor characters will likely have much more importance as well. Many events and actions will have city-wide effects. Feuding or indifferent gods will likely find themselves working together on many occasions whether they like it or not.
The downside is that I do have a pretty big course load this semester, so I would probably limit turns to 1 per month. Accordingly, I think I would make 1 turn = 1 month game time (since the scale is brought down considerably from Pantheon or Aesir...). The upside is that I'm taking both Mythology and Roman Civilization, so I could add quite a bit to the setting and fool myself into thinking it's study-related.

I would need at least five people to commit to playing and probably couldn't fit in more than ten. Any takers? Questions, suggestions? If it looks like there's enough interest, I'll put together a more detailed scenario, rules, and a map.