boxing is judged and points are awarded, but only to stop the contestants killing each other.
a line judge is used in tennis more out of tradition than anything else now, the line-judge could be replaced by cameras, or a 'replay-the-point' rule.
ski-jumping? – i don't care what position the guys hands/knees are in during run-in / flight / landing. Replace the judges with a height*distance points system or it's out.
(My olympics would be very different)