Moose not many people want their book ends quite as OS as you, and I imagine that flat Pred may be beefy enough for most of us mortals.
I was also surprised by the easy to throw line stuff, particularly the Jade/Diamond as the Sapphire is surprisingly good even at speed. I enjoy some flippier and light weight stuff but would take a 160s crave over a diamond for everything but late flipping rollers, but if I am putting a disc down to roll I don't want light weight.
DGA vortex is what I tend to recommend everyone try that enjoys flippy stuff but has the arm to get the heavier discs up to speed well. They still shock me at how useable they are.
Art Stryker, which discs are your go to, or most thrown? Your line up seems to cover everything and then some. Not sure how much you play or how long you've been playing, but without a lot of time and reps on specific discs sometimes its hard to really "know" that many discs well. you mention not being sure of whether the Jade really deserves a spot in the bag, what do you think would happen on those days it's really working at a new course if you didn't have it? Would the Sapphire/diamond/crave stand out instead? I find myself stepping back and playing a little while with 12-14 discs often to help me decide what I really need or learn the stuff I am trying out.