First let me say, I personally don't think there are any great views a BCV ... but I don't think there are any really bad ones either. So getting one room over another isn't really that big a deal.
You could request a view - Pool, canal, Epcot (although I heard they are not using that name anymore), courtyard...
You could request a floor - Upper floor, Lower floor, First Floor, Top Floor, etc.
You request a location - Near Self-Parking lot, Near Main Elevators, Near Elevators, Close to BC, Near laundry..
What they have available the day you check in may be limited, so don't get you hopes set on one view.