Aluminium designed in as heat sink perhaps? But not sure if this is so relevant in an actively cooled DC setting as passive buried under cables at a home workspace!

We were a little team, doing the API dev, the infra, the hardware and countless things. The product is improving and it was impossible to even imagine remoing the case as we spent so many time wiring everything, going to DC and setting up everything. Yes the team is actually doing all of this, even going to DC installing the macs in the racks.

But I agree that for a big scale, this is a good solution. (cf: github)

Had a similar problem in T43 HDD.