The sandbox would be a lot more useful to our team if we could copy existing workflows into the sandbox instead of rebuilding them. This would let us iterate on existing functionality.
Additionally, it would be great to have the ability to promote sandbox workflows into the production environment. Unless we've missed something, we're manually rebuilding and given that the sandbox is embedded with our production login, we're either screenshotting one environment to copy into the other or working off of multiple screens.