Yes please - small things like the branches drop down are not very intuitive.
I think the competitive advantage for Bitbucket will come from super-enhancing features like the issue tracker. Today, I still have to run Redmine inspite of having Github issues. Give me an industrial quality issue tracker (hooks, assignee features, charting, roles and permissions).
Basically just pull Bugzilla into Bitbucket. Now, that would be a killer feature !