I love all the new things the mercurial developers are willing to experiment with and try out. It seems the (sometimes maligned) plugin system that mercurial uses makes this easy. It's been really interesting to see how our (mercurial developers' and users') ideas about how distributed version control can and should be used have morphed and changed over the years. I remember when mercurial's branching recommendation was to have a clone per branch and when we all hated the idea of modifying our history. Now mercurial supports 4 different branching models and has excellent history editing support with commit --amend, rebase, histedit, and changeset evolution. I'm excited to play with the other new features that are coming.
