I've had a skim over the roadmap and everything, and am currently using some of the tools that are targeted for this project.

My only concern is, I havent seen any common metadata layer ?

It's pertenant in my mind, as I'm currently maintaning a SAS Metadata server, Webfocus metadata and Cognos metadata and it made me realise that there arent any good open source metadata servers out there.

Certainly nothing that covers business and technical metadata, or anything that has the scope for an whole-of-enterprise setup ... well, I should say, not that I know of.

With all the tools we're looking at in Pentaho, a metadata layer would be essential in tying it all together.

Food for thought.