I don't mind the plug at all. I know Metabase supports raw queries, but we're going from normalised schemas to 'flattened' denormalised ones to help the reporting effort.
At the same time, I don't expect the whole organisation to know SQL while I do expect them to make a slight effort to use Metabase's 'Question' interface (if they want data out).
I'll be sure to take a look at Redash