A points system would require more logic than the wrestling business has ever had.
And agreed, losing talent would be bad (but good for competition too I suppose), just look at the loss of D'Angelo Dinero, he has risen to headline status in TNA, released simply because creative had nothing for him, despite his ability to wrestling a great match, cut a superb promo and heck he has the look, he is turning out to be one of the biggest mistakes/people they dropped the ball with. Wrong section, but "Pope is Pimpin!"
But what i mean is despite the advantage of better overall programming, there are so many business reasons that the split works and thats why i feel it will be around for a while yet