This redesign should incorporate the general philosophy of changing the css and javascript architecture of the site. In general, CSS should be defined across all channels for standard elements, of which most if not all elements should be standard. Specific CSS for each channel will seek to define only very local styles, such as color.
Javascript should be reorganized into as close to singular files as possible. A general rework of Javascript use for effects should also be undertaken in an effort to simplify bad script behavior.
The new philosophy will seek to avoid using absolute positioned elements (if z-indexing is needed, relative positioning should be used with no offset). All elements should seek to follow a div / floating style. Also, wherever possible, background images should be removed. Consideration of square cornering versus rounded is encouraged also.
Finally, the redesign should seek to provide support for all browsers back to IE 6. If necessary, a lightweight version of the site should be considered for delivery to IE 6 browsers.