I totally agree with you but Dynamics isn't the only product users would want to migrate from. Salesforce, Zoho, DrivenCRM, ResultsCRM, SugarCRM....I could keep going. It is part of our long term plan, not our short term plan. We have other things like Google Apps integration that take priority over migration from other CRM products.
No way of manually doing this besides using the import tool built into Method. Of course this isn't a cascading import so you'll need to import one table at a time. The other option of course is to create an API application yourself which imports the data into Method.
Isn't the answer you want to hear I'm sure.