This report would work the same way as "list of contacts by tag" and would allow users to list their contacts by each of the prospect manager phases. It would give a count of contacts in each phase and include the date of the last time a particular contact was touched. It would also allow users to export contacts in each phase to XLS or CSV just like most other reports.
Prospect manager is a useful tool for managing leads but it does not tell users how many leads are in each phase category so it's difficult to know if your team is making good progress moving leads through each phase of the sales cycle. There's also no way to export the leads by phase.