How about if the game tape only reveals the potential of 1 attribute, but you get to pick which one. A normal SV give you, what, 4 categories? Make the game tapes 1/4 the price of a SV, or bump it up to 1/2 the price if a slight recruiting impact is included.
At that price, I think it would really add another layer of control to thoughtful recruiting. There have been times I was torn between two recruits with high potential in similar categories. If I could have confirmed which of those were high/high, I would have more clues as to the better player.