I think one of your “issues” is that Bluesound Nodes/Nanos work very well when used as streamers that feed a high quality external DAC. I use a NODE 130 that I purchased from Fidelity Audio in the UK with FA’s PSU unit pre-installed and then added a Gustard X26 Pro DAC and then later a Innuos Phoenix USB reclocker. At this point, I think I would buy a better DAC before looking for a better streamer (though since I’m out of components to upgrade, Immopen to suggestions as to what streamer or DAC would make a noticeable difference in SQ
(the rest of my system consists of a Bryston 4B3, Primaluna Evo 400 pre bi-wired to Tannoy Cheviots with SR Foundation or better cabling and PCs throughout)(I suspect the best thing I could do would be to upgrade my speakers, but my wife hates tower speakers and would not go for anything that is physically bigger)