I love all of the RME gear. Over the years I have owned many pieces of hardware only selling to upgrade.
Two pieces of gear I love are my Babyface FS and the ARC which I use "on the road".

Now,....imagine if they were one machine!

At the moment, when using the BFace, I hardly ever use the physical buttons on the unit. I use the ARC for Talkback, volume, and especially having access to the Snapshots is fantastic. (I am a TV/Film composer and find being able to switch to Music, Dialogue, FX tracks very helpful)

Just saying,....imagine if the ARC had an output and perhaps ADAT in and out too.