Diamond. That might be worth a try.It’s another variable that may, or may not matter!
The dealer pair I borrowed were connected at the top, and I did the same when my own arrived. Then a few months later I bought the jumpers from the same guy as made up the cables. It’s quite possible the dealer chooses that method because it’s easier to reach - I wouldn’t assume it’s because of the optimum sound. Sometimes the practical and prosaic rule!
Arguably the treble is the most subtle sound, so might appreciate the first connection. As you imply, bass draws the most current so perhaps should come first. Diamond wiring would be another option to try, which theoretically is the most even-handed.
but thanks for clearing that up