1. Light, 'airy', 'web2.0'
2. To have links/blocks/icons for other inner section of the site: news, auctions, blogs, hotel reservations, tickets, dating, yellow pages, classifieds, community, etc.
3. Initial color scheme should share same colors as our logo - http://99designs.com/contests/19171/entries/282
4. Design should be easily changeable for inserting new logo/icons, implementing new colors later for branded sites.
5. Good readability, good vertical rhythm, web-safe fonts mostly.
6. Ideally, design should allow flexible width of the site. So all parts of the design should be done with keeping this in mind.
7. Min width: 1000px, so users with 1024px resolution still can see the whole site.