This is a bit like people debating about Frank Geary's design of the Guggenheim in Bilbao. Is the building overshadowing the art, or does only bad art have to worry? From what I've seen, I think the cool architecture works.
But the hall upstairs has 1001 potential uses, so should be as utilitarian as possible, so that it is equally easy for all users to adapt it temporarily to their needs.
Plus, it isn't going to be a supervised space, so its not as if we could have any art worth nicking, i.e. good art, up there.