I think that none of our present themes can fully satisfy your customer.
We have, however, in our Themes Project three themes that, out of the box, may provide a web feeling – 'Analytics', 'Facebook' and 'Gmail'.
We are planning to create a Web 2.0 (Content centered GUI) theme for our system which will, hopefully, provide a better match to your requirements.
The new Web 2.0 theme is expected to be our default theme for the .NETHTML5 branch and in order to create this theme we need to make infrastructure developments meant to take place in the immediate future.
As the company visual designer I promote this development as forcefully as I can and hope for prompt results.