I just got a pair of CDJ 2000 Nexus and a DJM900. Classic setup. I was surprised at the amount of cables and an Ethernet switch needed to connect all, and even more surprised to find that digital audio needed its own connection. Reading in this forum, someone said there “wasn’t enough room” and even suggested it would take 6 ports to connect 4 decks. Really? Hasn’t Pioneer ever heard of Daisy Chaining. The most you would need on any device is 2 ports. Plus, that should also replace the “digital” inputs. Ethernet can stream 4K movies and sound. Why wouldn’t it be able to handle 4 audio signals and sync data.
I am guessing it’s the same lack of vision that refuses to put Ableton Link technology in at least Rekordbox, if not on the devices themselves. Well at least I love the devices, even if I have to use them with Serato.