Certainly not something we need to address now, but over time I would like us to move to [inline undos](http://i.imgur.com/QsQfTzU.png?1) instead. Among others, [Firefox has adopted this convention](http://i.imgur.com/3nk1sna.png).

See also: [Never Use a Warning When you Mean Undo](http://alistapart.com/article/neveruseawarning)