It seems to me that one big advantage of an imaginary art exhibit is that you don't actually have to pay to go an "see" it: you can imagine it from the comfort of your home or even from another country. It sounds a bit like P.T. Barnum's "this way to the egress" to me. But I make my living doing modern art, although I like more traditional work, too. I've found that if you create pieces that other people find interesting and worthwhile, you'll do fine. I've never tried cutting a cow in half, though; I suppose you'd want to freeze the cow first and then get a chainsaw...