Anyone notice that Suzuki never wears glasses after the Kappe hunt? Maybe Gantz fixes eyesight (or Suzuki has contacts...)
As for the Tanaka scores, I figured if a sent Tanaka cost 3 points and the boss was 5 points, it would total ok (which shows how Oku probably had aliens worth 5 pts as the Onion Dad was a 3 pointer when sent, but then later changed the point scheme in time for the Statue hunt).
This brings to a point in that case how Nishi seemed upset he only got 3 points for the Onion Dad, but before had 87 points, which seems to me he had used the y-gun a few times before then (otherwise he'd have 85 or 90 points). Though we now know that the y-gun does not reduce points, Im going by a feasible excuse for the points used by Oku back then.