i don't have this issue
i don't know if hip pinch and testicular compression is related to body size and type or not
i wear generously sized 1 piece saddles with expansion pleats (primary = woods saddle and back up = cruzr xc). I keep the waist belt tight but the leg straps not as tight. At height, I have the pleat pulled down, especially if sitting.
tether height is somewhere between nose and top of head, bridge is centered in bridge loops, my bridge is moderate length (maybe 2 feet or so), and my tether length is adjusted so that if i sit with my knees against the tree my knees are at roughly a 45 degree angle with the tree (this distributes weight between feet, knees, and saddle and allows you to stand/lean and still shoot)