As a dev, any opinion I give will be biased towards code :P
But as a thought, maybe a good idea to give something on branding / themeing?
Also, what sort of level would the audience be at? Would we want a complete beginners guide? Or some more fancy stuff? Or new branding techniques for 2010?
Senior SharePoint Consultant
Intelligent Decisioning Ltd
http://www.id-live.com
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@jimmywim