What I tell the headhunter I'll tell you: MMS or Managed Metadata Services is the new lingua franca of information management practices, It's also the precursor to a whole host of roles and responsibilities around how organizations not only document what they do but do according to how well they document
Any three ECM managers should be able to "sing their song" through an open mic through SharePoint both as an ECM but even more -- as the lingua franca for building sound search, metadata, and taxonomy practices