Of all the many things we have discussed in these forums, this is a new one to me. I've never even thought about my billiard size. No, wait. I had a hydrosele around one once, that had to be unwound/removed whatevertheydo,ouch! Doubled the nut size so I couldn't sit down without pulling the scrot up - embarrassing. Direct answer to original question: We got what we got, some low hangers, some not so low, some big beans, some not so big. We'll all have low hangers if we live long enough. Can't do nothin' about them, 'cept maybe empty them once or twice a day. They seem to fill up nicely by themselves. Next question?
Balls adjust according to temperature. When warm or hot they sag. When cold they rise. It's their way of regulating optimal sperm temp.