I don't think the Nether is a good place for the fireworks, I think it looks pretty ugly and the ghasts would be annoying in the large open space that we would need, block damage or not. An urban environment seems like the best stage for a New Year party I think.
I'll close the option to submit potential areas for New Year on November 1st, then I will let people vote, and I think I'll disable voting for your own regions, because there are so many candidates now. I guess the voting center could be used for the poll.