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Whether or not people *want* this feature is a different topic. It's still mostly a cosmetical issue, because adding launchers does exactly the same thing, only visually different. This doesn't mean that adding menu items is useless (although for me it is), but you should at least understand this point of view.
I called this an ego problem because as far as I can tell, the descision to make menu-editing *not* a priority is a developer-inspired descision; not a descision based on user feedback.
But that's exactly wrong. There was never a decision to make menu-editing "not a priority". It didn't make it for GNOME 2.10, shit happens. Even before 2.10, the design for the current menu editor existed, so the reason the menu editor is in its current state is that it was planned like this all the way, not because developers didn't bother to work on it. For power users plenty of alternatives exist already, so I fail to see the big problem. Whether or not a more advanced tool would be useful for everyone is obviously something people disagree about. It's not an ego problem but simply a matter of different opinion.