More games like Houdini please. Something most of us know but is something fresh in terms of a theme.
Music pins are getting trite and "meh". While I like ACDC, Metallica, and Iron Maiden (seen all 3 at concerts, great shows to say the least), I would like a breath of fresh air.
American Pinball brought us something different and proved people will gladly pay more than the Pro price for it.