Why not give us players' heights as well? If a scout can find out how old a player is he could surely find out how tall he is. Are you saying height is only generated when the draft takes place?
Not going to happen.
First, the BB team doesn't want to facilitate collusion on scouted players any more, so at this point the official position is that the draft already contains as much information as it possibly could (so height isn't happening, even if we're talking height ranges).
Second, as CrazyEye pointed out, height and position are correlated. So if you see someone listed as PG in the draft, you can assume that more often rather than not he will have the correct height -- unless you're quite unlucky. The draft is a risky business, just ask the Detroit Pistons.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."