I've only used Nuendo(4), so if this is already done in other DAWs I wouldn't know.
Also, I think there should be a lot more visual help for composers, by providing flexible ways of adding information on the screen like you can on a paper score. I mean, I'd love to write (text) notes all over the place to help me remember what the hell I've done to something, or might want to do here and there. Nuendo 4 seems very archaic, but I suppose they don't want to frighten off users. The way around that is surely to offer alternative customisable visual modes (like skins) perhaps that have to be downloaded -perhaps via open source?
By the way, can you save a written log of the history actions? That could be helpful. Or, can you actually save history that can even be used next time you open it up?