I used to use a Schiit Gumby multi bit dac as well, I still regret selling it.
I recently moved from a pc based streamer ( optimized for streaming audio) first to a Roon Nucleus, that was a down grade IMO, it is one of the most over price streams on the market IMO. Unless you love roon and need it in a dedicated streamer I'd pass on the nucleus, specially after you open the box and see an empty chassis. I sold the Roon as it wasn't even close to as good sounding as the Optimized PC with Tidal.
After i sold the Nucleus I got an Arender A10 with an Internal DAC ($6k). this is build like a tank and the chassis is stuffed full. but in the end its about the same sound as the optimized PC i was using prior. I honestly think the DAC in it is lacking in many areas like extension and sounds rather boring.
I wish i had the Schiit Gumby milti bit DAC still, i sold it to help fund a preamp. It's better IMO then the DAC 2 board in my McIntosh C2700 preamp and the Aureder A10's internal DAC. The Aurender is really a disappointment to me for what it costs. yes i have done a side by side comparison.
If it was me any my $ I would upgrade your DAC maybe to one of Schiit's Yagys and call it a day. Or another quality DAC. I just don't hear the huge difference others seem to hear with these expensive streamers. I find the DAC has more of a change in sound then the streamer. i'd pick one you like the interface with and stick with it.
As of now I feel an Optimized Computer is better then the dedicated streamers ive tried thus far.