Just give a player who specializes in throwing weapons a magical weapon (+1 is only level 1) as soon as possible and the "problems" go away.
Besides, page 217 doesn't say that ONLY light thrown weapons can be used with close attacks, in fact I'm sure that it just references to the rogue who can use his ranged powers only with light thrown weapons.
Bob, do you know that magical thrown weapons return automatically? The designers seem to have had the same problems as you described and build in this reasonable fix. 8D