I believe that this kind of architecture would make your tool the killer app in the field of Outlook "synchers"
The ability to sync a whole network of computers would be very welcome in the business world, as well in homes with more than 2 computers (thus allowing the roaming of outlook profiles around the house, the accounts being acessible to the whole household in any pc).
currently work with outlook 2003 but it is an e-mail client which has several disavantage for me : I do all my work with epimm,in fact, notes, contacts, and todos are available init and replace very avantageously outlook.
The best thing I will regret if I give up outlook is the ability with EZDR to remove duplicates, a functionalityy most current e-mail clients don't have.