The wheels I am riding are almost 40 years old - MAVIC MA2 rims on Performance Bike sealed bearing hubs. They remain rock solid but it is just a matter of time.
I have some VO rims in the rafters, waiting. I have sets of Record and 1st Gen Dura-Ace hubs, waiting.
This bike is and will remain 120 mm spacing with a 5 speed freewheel.
As heavy as I am, I have never broken an axle. (knocks on wood).
P.S. - I am really liking the all-new drive train and am quickly regaining my confidence in it. It is smooth-shifting and runs quietly.