Just saw your post & your point/question is a good one. I forget now which end [top or bottom] of a spring should be cut; someone please help here? TOP, I THINK..? I believe the lower coil is basically wound flat to sit into the A arm correctly; so it should not be cut.
Anyway, yeah, if you cut a spring it could very possibly throw the location & "clockwise" relationship of the ends off from each other from what they were originally. Good point & one I never thought about; especially cuttng more or less than one full exact coil...
I installed Hotchkis springs in my car 9C1 & helped my friend install same in his ImpalaSS. While doing so, I took a very good look [my car was torn apart for three months] up into the frame [upper spring perch]. It is not a completely flat area within the frame. It has a circular depression just outside of and around the set of stiffening tabs which face down from the frame. Those tabs hold the upper rubber/poly cushion as well as the spring in place; the shock absorber shaft passes up & through the center hole that these tabs encircle and finally through the upper most bolting hole in the very top of the fame [talking shock absorber shaft].
Part of the uppermost coil on the front springs sits down [up actually] inside this circular depression area. The deepest [3/8"~1/2"~3/4" deep?] part of this impression/depression is where the end of an original [and Hotchkis] spring is located when the bottom coil end is indexed properly on the lower A arm...
So, yeah... Just cutting & slapping springs into the car could cause the spring's upper coil end to not sit into the depression properly AND not fully lower the car to it's SPRUNG ride height... Beware..!
So, if I was going to cut my springs [anything other than exactly one full coil] then I would index the top coil end to this original depressed area [deepest part & the end of the depressed area]. The bottom would then fit wherever it wants to into the lower A arm and not necessarily between the two index holes.
You could verify & easily see what I mean by compressing a front spring with an internal type spring compressor and fitting it into the frame & lower A arm. Do so the first time without using the upper poly/rubber cushion & make up the ball joint & lower the car onto the suspension. It should then be easy enough to see exactly where your new lower coil index point would land.
I feel correct in these statements & hope my jabbering is understandable?