At the moment there is only a possibillity to create a marketinglist based upon: Accounts, Contacts or Leads. In our Business we are using Connections for the relation between Account en Contact. Therefore it would be very nice to have the possibility to create a Marketinglist based upon Connections.

Right now we're trying to connect Power MailChimp to our Dynamics environment. We're very excited about the possibillities, but we cannot use it because of this limitation.