>>8
I'm not them, but public key cryptography would be a nice replacement for the send/verify/update they mention. With regards to DVCS it would be nice if instead of a platform or email the same distributed mechanism responsible for syncronizing the source code could also handel pull requests, bugs, messages, wikis, etc. (fossil does all but the first, git only the first iirc) Another nice thing about the latter is that it brings all these sporatic elements of a project into a system which works well offline.