My systems are Shimano Ultegra 11 and Campagnolo Chorus 11 for rim brakes vs SRAM Force eTap HRD 12 for discs. I asked the LBS to take a look at low contact point on the discs which I did not like. Since they could not fix it I had to tinker with it myself. I learned how to do it, but the process is definitely more involved than simple cable adjustment for rim brakes. Same for centering - rims are much easier and rarely need it while my discs love to be re-centered at every opportunity. I shudder at the thought of having to bleed the brakes which, according to SRAM, should be done yearly. I guess you are lucky that your system is more reliable than mine.