When looking at Changeset, I see the list of the files modified. It would be nice to be able to optionally be able see the modifications in that file that occurred in the server interface.
I don't think this is a v1 requirement. It just something I can see myself wanting. Granted since I do have the changeset ID, I can go look it up manually with my VCS.
Maybe another option would be to link to a web interface of the VCS (If the VCS supported it)