Paul, don’t mean to put you on the spot (I have asked this before) - but I think it would be instructive for you to share the specific shortcomings of Roon “to your ears.” I apologize if I missed the details somewhere.
Full disclosure, I too find Roon to be inferior to my JRMC/Wi-Fi /iMac to Router to Bridge II to DS Sr. set up. But I would like to compare notes with others and you have been very consistent in your opinion about Roon. To me, Roon-sourced tracks are less “dynamic” and a bit “duller” (i.e., less detail I guess), in my system than JRMC-sourced tracks.
I appreciate your consideration and if you would rather not elaborate, that’s fine.