We love how easy it was when we first started using this software! It has been used by our Dev team as well Production Team in order streamline data ingest/data pull process from Salesforce into Datastage which feeds ETL processes (SSIS).
Not much at all dislike about DTP - maybe more features could be included since its free but I think if you are looking solely towards an SSAS product then look elsewhere or give them some time before jumping ship. Streamlining sales force automation between SFDC & Datatimege with ease!!