PVs that should be there

[kristen]

I apologize in advance if there is a thread already like this one or if one is similar ^^;

I was just wondering, what songs do you think there should have been PVs for? After watching the 'genesis of next' pv, i think Ayu and Keiko should have done a pv for A Song is born.

A few others i think are PV worthy are:

unite!
Duty
Scar
End of the World
Far Away (I know this has one but i think it should have a separate one from seasons and vogue! )
Naturally

Input would be nice