@no_regrets - I can'y give you the whys and wherefores as to why transports may have optimized outputs but for instance my SimAudio 260DT is optimized for AES/EBU. I got that 1st hand from SimAudio. I also read that for instance the top of the line Project is as well; certainly there are others. I don't see how any transport that has multiple outputs limits their market by optimizing one; the rest aren't poor sounding just not optimal.
If anything the LTA Aero potentially doesn't allow users to match it with the best capabilities of a transport because of its limited inputs.