Delayed followup emails to be sent so many days after a sale to solicit testimonials or upsell products, etc.; of course with full admin controls in the new wished for email center.
Banner Ad Manager - with rotation capability; load the banners, set the schedule and go.
Featured products rotator, set how many, identify the products or categories to be featured and with each new hit of the home page products are randomly rotated.
Promotion category pop-ups that can be set and will pop-up as a visitor enter or leaves a particular category depending on the settings. Must be able to set size, with or without scrollbars, etc.