want to ditch my Brooklyn to streamer..thoughts?

"But the Node2's digital outputs do NOT support MQA into another DAC even if the DAC supports it as does the Brooklyn"

Not true. If the downstream DAC supports full MQA decoding, Node2 will just pass the source through with the first level encoding.

"You need the Vault 2 to stream MQA through without full unfolding to a further MQA capable device, you have an option then in the Bluos APP to select whether you are using an external MQA decoder or not.
I do not believe this exists in the Node2."

Not true. Select the album vs. smart gain. I literally just checked this on my phone. 

Why complicate things? Why do you need a separate streamer? Why use a USB connection? Why use a computer in your audio room or even a streamer with attached disks? Been there done that for over 10 years. There is a better way and that’s using bridge technology inside a dac. The 2  eat models are from DCS and PS Audio, I have the ps audio setup and your trade mags have it as rated in the top tier and I would agree. My best day was when I sold or got rid of my computer/audirvana/pure music setup, the Auralic Aries, and especially my AQ Diamond USB cable. Hello roon with ps audio dac/bridge II,no hiccups, the best interface, fantastic Tidal implementation, and only using a good quality Ethernet cable with 1Gb external internet speed.

@kalali.
if you see same option in bluos app on node2 then it should work. As I said I was not 100% sure if node2 had same capability, obviously it does.
Always up for learning!

bondmanp-I took my Mac mini running audirvana or pure music and turned it into a true server running OSX server. I have 26TB of raid data to hold all my ripped music or purchased hires files. This server is located in the basement a 100ft away from my dedicated audio room. the Mac server is used to backup all my macs data, setup caching of software updates, run minimerver for other audio connections throughout the house, and handle sharing of my audio ripped files.
using roon with the ps audio dac/bridge, I point to the Mac server for my audio files, and the server runs roon to render MQA files. The thru roon, I link to the bridge to play my music. It’s also critical to use fiber for your network connection (I have a 1Gb fiber connection) so it’s absolutely quiet whereas copper connections introduces noise. Using roon, I can mix Tidal albums with my ripped music so when I play an artist, it will play from my server or from Tidal, in shuffle mode you really don’t know where the music is coming from, who really cares.