Yes, the value doesn't seem that good if you're not buying it for the built in DAC. I'm curious as to why you bought this when you already have a RPi4/Moode and a RME DAC that works great. What were you hoping to improve on?
I'm not the one you were asking, but I'll reply about why I'm considering it.
I run Roon Core upstairs in my den on an iMac (also happens to be directly connected to an RME ADI-2 Pro, FWIW). The music comes from both a locally attached SSD HD and Qobuz.
Downstairs, in my living room, I have a Roon bridge / endpoint via Raspberry Pi running RoPieee, which then connects to a Schiit Modius.
I would consider the Arsy for a few reasons:
1. Unify the Roon bridge into one box, instead of two. Right now, the cable connecting the Pi and the Modius is prone to losing connectivity if I move things, which is annoying.
2. A slightly higher specced DAC. The Modius tops out at 24bit/192kz and doesn't support MQA. So if I wanted to play with MQA or ridiculously unneeded higher bit-rates, the Arsy could do that.
The big question I have re: the Arsy is if it supports RAAT (Roon's native transport protocol), as this is used for zone grouping in Roon.