Hi.
We are in the process of developing a metadata schema for multilingual performing arts subject matter and think that Omeka would make a good use target for this. The objective would be to allow the use of this metadata schema for individual collections to import and extend their performing arts metadata, and then to be able to expose the generated metadata to Web services or other sharing mechanisms.
Would the Omeka team be interested in joining some discussions about implementation and use? We can be contacted at my username at cornell dot edu or at glopac at cornell dot edu.