Being tossed of from high altitude is and should be a threat, which is why you want high athletics score to resist.
I had a wyvern flip a player off from 200 feet. They took 64 damage, barbarian half damage, 32 damage. I havent looked at what their calculations are because its a bunch of arcing and bouncing off of things. Ill try to pay attention next time. But that was 200***** feet. 100 feet would have been 32. These are usually like...30 feet so like 18 damage boxcar-ing it. Seems like its too much at the moment.