Well the plan is to have more nations, and a slightly larger map than that. It would be half blitz, but then half normal game, is what it looks like it's shaping into.
But beyond the basic game structure, your blitz server is operating as PBEM, or direct hosting? I sort of wanted to avoid the PBEM setup, as I just thought it might overly complicate things with that many players involved.
Note to everyone else - if I do host this game, I have no fancy automatic notifications or anything - and I won't be making my own. So if you're not okay with that, then I'd like to hear about it rather than people being surprised.