I'd wish the "open directory/bookmark" window to be resizeable. I have bookmarks on several quite long path names on a remote server, which have a common root path.
As the "select bookmark:" panel inside this window reveals only about 45 letters from the beginning of the path, I always have to guess which is the right bookmark ...
Alternatively, a scrollbar to see the full path name would be a viable workaround.
Anyway, I'd like it best if the window would automatically grow with the lenght of the bookmark entries (to a maximum of screenwidth).