Hi,
I think it would be a nice gesture if the wikimedia foundation decentralized some of the internal projects that have had little success over the last few years. Two that come to mind are the enwiki pages-meta-history file creation (1 successful dump in ~3 years), and apparently very little internal concern over this, and also the images/thumbnail wiki-specific dumps that have been neglected for several years. If these two projects are opened up to the community I think that would be great!
cheers, Jamie