Hi Damien,
just a new idea: Is it possible to add support for to select the extension menu with the keyboard. User can define shortcuts for the entries in the menu extensions but what I would prefer is something like:
Use Alt-X to select the menu, then press S and then A on the keyboard. This should select Extensions->SVN->Add. This would be also cool for the context menu, because sometimes it is faster to work with the keyboard then using a mouse.
What do you think about it.