It would probably be a cost thing, but I do wonder how much extra time it would take for the tech panel to actually review jumps in slow motion. You know you're already going to review the jump, you presumably set the video at the point just before the jump occurs, so do it in slow motion and it takes a bit longer, but presumably you'll get your answer first time (if you have to replay it again then it should be so close that you should really just be giving the benefit to the skater there and then), but for normal speed you may end up looking at it once or twice more anyway so you end up taking the same time or even more. The big question though is whether they should have ultra slow motion or even freeze frame. That should give you the definitive answer, but will you end up making a mockery of the sport with all the URs - my answer would be no - looking at the times you get controversial calls and looking at them on Youtube at 0.25 speed and pause, and even or especially at the already slow motion replays, well I think the technical panel gets it right a surprising amount of the time, everything considered. They certainly get it wrong from time to time, but I don't think you'd end up getting a massive rash of extra reviews, time taken for them etc. etc..