Apparently, there are bad preferred views - there are a number that are very close to Standard View rooms - so you have pretty much a standard view room that you paid preferred view points for. There are a few that are in odd corners - which make their windows look back at the building (and other rooms). There are a few that are tucked behind the Keister Coaster (those may be classed as Standard View rooms), and there is a contingent here that claims anytime you need to look at the scary clown slide its a bad view (I think they read too much Stephan King).
There are pretty much no bad Boardwalk View rooms - though there are (IMO) better Boardwalk View rooms (higher floors, end of building - the best views are the furthest from the elevator and you'll be hiking for the view).