R785 shift/brake sets come stock installed with the older-style (SM-BH59) Shimano brake hose. Shimano reps claim that when testing it back to back with their newer BH90 hose (same as XT/XTR/ hose), the older style hose gave a more “road-like” brake feel (better modulation perhaps), so they supply it as the stock brake hose.
Apparently one of the primary reasons newer Shimano hydro brakes are so insanely strong is the redesigned BH90 hose. It is very stiff and delivers all the hydraulic fluid to the piston without losing power to flex/expansion in the hose.
If you’re looking for a bitier, more MTB-style stopping power and feel, my Shimano reps said you can easily swap in SM0BH90 hose instead. They told me that the power takes some definite getting used to, but I myself would prefer more braking power, and would run the BH90 hose.