I agree that boltslinger needs adjustments. Cross-compatibility is a problem that all the archer trees have, and some of the nerfs it's received are probably not that great overall. Maybe its power needs to be shifted around some.
But being able to take Arrow Hurricane before an ability that was intended as a prerequisite, and saying that its damage should be balanced around that unintended behavior as if it were intended and then complaining about how unintuitive and annoying it is to do that in the first place...have you not considered that the reason it's so unintuitive and annoying is because it was never intended to begin with? That this was unintended behavior? Something that slipped through the cracks?
Arrow Storm's buffs all add more arrows and reduce damage to compensate so it doesn't go absolutely insane. When you get to a certain point though, you can't reduce damage as much, otherwise you just demolish everything. If Arrow Hurricane removed 10% damage like Nimble String and Windstorm, then it would break even on its damage- as such, its damage reduction had to be lower. You can understand this, I'm certain.
Because of this, it also follows that if Arrow Hurricane's damage reduction is smaller, it's because you were intended to have a set of damages that was also smaller.
100% x1 hit is a starting point.
60% x2 hits is buff.
20% x3 hits is a nerf.
Arrow Storm takes that concept and extrapolates it to larger amounts of hits and smaller numbers.
40% x8 hits is a starting point.
30% x14 hits is a buff.
20% x32 hits is a buff.
10% x 64 hits breaks even, and is a nerf due to accuracy and hit requirements.
So, in order to have Arrow Hurricane work, its damage reduction via the planned progression had to be smaller than the others.
40% x8 hits is a starting point.
30% x14 hits is a buff.
20% x32 hits is a buff.
15% x 64 hits is a buff.
See how the math works? Because that is just how math works. The smaller the damage per shot, the more shots you have to shoot in order to make up for it. If we were to take this even further with some mythical fifth arrow storm upgrade that cuts damage by another 5%, we would need to add least 1.5x the amount of arrows in order for it to be a buff- as 15% x64 = 10% x96, just like 20% x32 = 10% x64.
As such, you're meant to take one before you take the other. The layout of the boltslinger tree before made this a requirement, and it's a sensible one. You're trying to say this doesn't make sense, because now you can take a super roundabout way to avoid one of these effects and mess with the progression in ways that weren't meant to happen, and that's downright mad.
I've said my piece and I'm done with this topic. I'm not coming back to it. I'll reiterate- I agree that boltslinger needs adjustments. Cross-compatibility is a problem that all the archer trees have, and some of the nerfs it's received are probably not that great overall. Maybe its power needs to be shifted around some.
But you saying Arrow Storm's progression doesn't make sense is the statement that really doesn't make sense here, and continuing to argue for it is just...why?