Throwing 50 yards accurately. That would be a pretty low bar even for a JUCO QB.
But it’s not just the 50+ yard throws (not even primarily). It’s throwing out-routes and tight-window throws with zip. The last two years of Brees’ career proved that even with the best anticipation, a weak arm can only get you so far.
And to me, Haener’s arm strength looks a lot like 2019-20 Brees. You’re free to disagree, but I’m not too optimistic about his ceiling.