Comment 4 for bug 751323

Why did you just specify a load of random problems on a completely unrelated bug report? Please don't do that.

In answer to your concerns:

1) That's not supported in dbusmenu yet. Bug 748850 tracks implementing that, but it's not going to happen for Natty
2) Not support by the GtkMenu's rendered by Unity, or dbusmenu (and never will be). Menus should not be used as a bookmark editor. The *are* menus, after all
3) Not supported by the menu system either, and there aren't any plans to. Context menus in menus are horrible, and some of the features provided by that context menu will be provided by the solution to point 1