Bob,
That looks like a beautiful installation but it has left me a little curious. Back in the day when dinosaurs roamed the Earth and I wired my last new panel, I would trim my conductors so they could reach the last breaker slot on their side of the panel. Then I would dress it back on itself and come in at a right angle as you have. That gave me a little flexibility if we wanted to put a high ampacity ckt in closer to the main lugs later. Is that still a common practice or is it frowned upon nowadays?
Joe