An update to what I have found, perhaps this will help someone else looking for a solution to this problem:
Hexnode and Vysor both are not in the Shield Google Play store, and even sideloading Hexnode I could not get it to work properly. Perhaps needs the device to be rooted which I would prefer not to do.
Using srccpy, I am able to control the Nvidia Shield remotely, and all it needs to be is in developer mode. I am able to mirror the screen of the Shield to a PC on the network, or even one VPN'ed into the network (we used Wireguard on a Rasberry Pi 400 as a test). You can even see the video playing on the user's Shield if it is Youtube, Pluto TV, but NOT the major streaming services (probably a drm thing???). But this gives you a nice way to add apps and change settings to a Nvidia Shield remotely. Plan on replacing a few Roku's in the field with this solution as it gives us more configurability, is faster at loading apps, and hopefully less downtime.