"Unconference formats are great and powerful, but they require a thorough knowledge of the audience and speakers alike and very experienced moderators. I would suggest a simplification of the process for future endeavours.

Reduce the amount of tracks and talks to a minimum. one track, five to six talks per day, one hour each. As history keeps reminding us, less is more. Better off with six bad-ass, in-depth and engaging talks during a single track than four tracks and a myriad of cliched talks that barely scratch the surface of the topic."

[Seems to me that this misses the point of the unconference. There shouldn't be any talks at an unconference, just conversation (possibly activities/tinkering too). See the comment from Martin Eriksson. Also, unconferences are usually (but not exclusively) focused on the local.]