This could be wrong, but I understood the 252 scheme to follow the idea of averaging 7 per arrow. I believe the thinking was that at that rate, the archer getting 252 would be hitting the boss far more often than not and that would put them in a position to try a longer distance. A few goes at the longer distance, and they reach/better 252 and are ready to shoot the next distance up. I thought the idea was to try and give beginners an incentive without letting them over stretch their abilities and end up looking for arrows where the mushrooms grow. I also thought it would progress to 60y and possibly stop there; to allow archers to shoot well known rounds.
Perhaps the scheme was set up with recurve in mind but I can't see why compounds need better scores than 252, in order to demonstrate the ability to get arrows consistently in the boss. I appreciate that compounds are easier to shoot in many ways, but sticking at 252 just means they more quickly reach the longer ranges. (safely) The higher score , if that option is used, simply holds them back, perhaps to the same progress rate as recurves.
I appreciate that longbows are not so easy to shoot with, and holding those archers to 252 would be almost a life sentence. I am not being rude about longbow archers.
If the 252 scheme is designed as I have said above, then the VI archers will need a different pass mark; as do the longbow archers. If longbows shoot 164 or 180 and those scores allow the scheme to work, so progress is not too slow, then that seems fine to me. If some get through the first distances quickly, then the longer ones may hold them up for a while; or not depending on how good they are.
It makes sense, I feel, to find out what the actual archers are scoring now and base the pass marks on that.
over quick progress is not much of an issue ,I feel. Stuck at 20y for a year might be, though. Perhaps the time any particular archer stays at one distance needs to be monitored so help can be offered before interest is lost.
( I am not saying that clubs are not monitoring this but it could happen that archer X is making little progress and seems unable to get past the first gate)