If anyone wants to contribute to a VERY good open source project.. I really think that VersionPress would be a great candidate. I love WordPress. It makes web development fun again.. Every day I find a plugin that seems like a FANTASTIC feature.
The one weak point in most WordPress projects has got to be version control. There is nothing more frustrating than a poorly written plugin or theme.
I really think that WordPress NEEDS automatic version control .. Sure would love to have this feature.
I hope that they can come up with the funding for this project in time.