Bluesound Node Icon

I don’t have the Icon but have the standard N130 Node. Idk what happened to the BluOS software in recent months but some functions, like pulling up my Favorites through Qobuz, have become incredibly slow. I now favor the WiiM Ultra in almost every regard. It’s funny, the WiiM was originally the slower of the two, but following more recent firmware updates on both devices, the Node is the slower one by far. 
 

I would be surprised if the processing speed of the Icon is any different from the N130. 
 

I found this in an article on Hifi pig.com. if I understand it right bringing in an INNUOS can work with your other stuff  

In Standalone mode it also allows the Pulse to be a UPNP/DNLA controller so, for example, I can assign my Hegel 190 or even my dining room Sonos speakers or LG TV as streaming endpoints and run it all from the Innuos Sense app. Various UPNP profiles are offered in the app as needed and it worked for me without any problems.

I have no experience with the new Bluesound product and therefore cannot directly answer the OP.

  Doesn’t NAD make more expensive streamers than the Node, and still use the Bluesound OS?  If so I would perhaps investigate that if I were the OP

NAD makes one stand alone streamer and it is not high end.

They do have a dac pre streamer - the M66 - that has the same streamer as the Node.