I have suggested to Flex architects that there be overhang/brackets/whatever in the rear to protect all those BNCs and SMAs (SO-239s pretty tough).
So while we wait, I decided to mount handles in the rear (it works! I'd already done the front) - to both protect the unit and offer a cable support via a plastic rod(s) across the back.
Just yesterday, I received a shipment of new crimped UHF connectors from Tessco. Tessco is a large supplier of components to the cellular and telecom industries. These are the RF Industries brand and not some cheap Asian knock-off.
I could see something like a set of side rack ears at both back ends. Cabling would route 90 degrees from the back panel with a small strain loop and tie down to the corner panel ear. This is how cable routing/dressing is done in the broadcast, broadband, and telecom industries.
Presently, I have a tough time accessing the back of my gear as the countertop is pressed against a wall but there's a 1.5" gap for cable access. Cabling is made long enough so that equipment pulls forward for access to rear panels. As the shack is constantly changing, it's the forward/rear movement of gear that puts the back panel at risk of damage. The next shack will be designed for full 360 degree access.
We could even get into the pros and cons of the Anderson PowerPole connector. It's a connector I love and hate at the same time.
The PowerPole is very vulnerable to damage from accidental equipment shifts. Just me, but I would have much preferred an AMP Mate-N-Lok over the PowerPole. Of course, better DC connectors are available. Neutrik makes some really excellent DC power entry types. But even the Mate-N-Lok is mechanically and electrically superior to the PowerPole. It's tough to beat a 360 degree electrical contact area vs. the sliding tongue of the PowerPole.
I've measured excessive IR drop when using (properly crimped) cascaded PowerPoles (e.g., rig to RigRunner, then to a PowerGate device, then to the power supply with PowerPoles). It all adds up. They're fine for cable-to-cable interconnects with low to medium current demand -- but not as chassis hardware. My 6700 uses the Flex-supplied DC power cable and terminates onto 1/4-inch bolts on the power supply with nothing in between. A dedicated supply is used for the 6700 and a separate supply powers accessory devices from a RigRunner.
I had the impression the N-types were less likely to be visible with a TDR - but I have not really used that many in devices I built, or contrasted them with the UHF connectors (which are surely more common and thus handier). I'm too far out of component electronics these days, but miss tinkering.
But those Neutriks are beautiful - headed towards the mil rigs of my youth. By that standard, Power Poles aren't impressive - at all! I much like the idea of screw or some kind of locking mechanism, so I can't say I like the RCA connectors of the 6700 though they have evolved into a 'standard.'