There's a scene in their Flight 666 documentary where Lars Ulrich makes the point jokingly that Nicko needs to realise that if he dropped all those drums then people would be able to see him the way he can be seen.The funny thing too, is that it appears that he would be invisible to the audience and other band members. No watching the drummer for trash can ending it would seem.
Also in that documentary it was great to see the Heavy Metal, Rock and Thrash royalty at the LA gig like excited kids at the prospect of seeing a Maiden gig