OSx Sierra and loss of integer mode/direct mode

what will happen if I upgrade from El Capitan to Sierra especially with direct mode? Will I lose something in SQ or even in transmission of sound especially with TIDAL Masters?
Are there any other problems with Sierra and ROON or should I just stay away from it ie Sierra?

Just one data point (or two, depending on how you count), but I experienced no issues when upgrading from El Capitan to Sierra, either on a mid-2011 Mac mini (running Roon Server) or a 2016 iMac (running Roon as a remote). I did not discern any noticeable difference in sound quality, and I don’t recall having to change any settings in Roon.