It's been about 10-12 years since I played in a torney, and even longer since I helped organized one, but I think I can handle it.
Sometime in the next few days I'd like to post a poll to get a sense of what people want and how many are interested. It might help if the poll could be made sticky
in order to atract more attention.
As far as a round robin being difficult to organize, it would be the easiest: have everybody play everybody twice and report the results. All that's left to do is tabulate the results and resolve problems.
That, and of course, play.