I would like to see the following:
2> JS on the server side -- Could be a little repetitive as thats all you hear about on tech side of interwebs. In any case, node.js is simply sweet, with I think record breaking contribution velocity ( almost 2 modules added daily to npm ). We can have a session on express, which I think would be a potential fresh topic from node ecosystem.
3> JS libraries around HTML5 ecosystem -- There are many simple and awesome js libs supporting html5 transition. We can talk about them.
4> JS testing ecosystem - test frameworks available, approaches, war stories?
5> From subjective point of view I think a discussion on single page apps would be interesting too, its picking up again after those crazy AJAX demos in 2006.
What do you think?