Well, clearly I can't comment on anything from Mod Day that you would actually all want to hear about, as to do so is strictly forbidden.
I can say, however, that it was extremely enjoyable and useful, and that the rest of the mods I met are all great people. We had some really useful discussions, and it was great to see that we got on even better in real life than we do in game.
The one question I can comment on was Zarko's - support will be provided 24/7, come retail. But as a general comment - it was all very positive, I really don't think anyone will be disappointed (unless you sign up thinking there are orcs and elves, then you may be a bit gutted).