[Tobias Heilmann-Schuricht] “USB 3.0 extender for all things USB, 10Gb Network cable for all things on the network, HDMI cables for the two 4K work monitors, HDMI for the 4K grading Monitor and the MADI Link cable to bring the audio into the room.”
I think the reason to extend TB3 is because with one or two cables, you can deliver all that data and capability to your desks without having to run a separate cable for each data requirement.
You can break TB3 out to nearly any spigot you need and then keep everything else back on the rack.