My reservation in single chassis digital sources such as these is obsolescence. Digital formats/codecs/whatever they’re called come and go seemingly quickly. DVD-A, HDCD, SACD, DSD, MQA... what’s next? Having everything in one box typically means getting rid of the whole box, including the stuff that’s not obsolete.
If the boards are changeable/upgradable as James said, then that changes my view on it. I always think of my father’s old receiver with built-in 8-track. The amplification was fine for quite some time after 8-track was a distant and funny memory. I was contemplating the original Naim Uniti when it came out. It had CD, streamer, DAC, etc. built into it. Having stuff in one box that will go obsolete sooner or later is a big part of why I went with the B60 instead. Not the only reason, but definitely a major one.
I like to keep digital sources as separate as possible. If it’s upgradable, and for a price that’s makes it worth it not to throw the whole thing out, then that changes my view.