I think the whole BB7 thing needs consideration amongst bikepackers.
I’ll think you’ll find that the frequency of cables snapping under tension is significantly higher than say damage to a hydro hose or pressure loss.
With correct hose routing/securing and reinforcing around potential failure points then there is absolutely no reason that shimanos bomber proof XT brakes shouldn’t be considered.
When you factor in the price of BB7’s and all the stuff you need i’ll think you may find that XT’s are much cheaper and give a vastly improved ride experience.
The XT brakes are superior in every way. It all seems to stem around leaky pipes in the middle of no where.
Besides. What are the chances of two XT brakes going down simultaneously?
With a 180 rotor up front the front brake alone has serious stopping power to get you down the mountain and if you have an icetech rotor with finned pads its unlikely they are going to cook that badly.