The Mojave improvements we made will persist in all new releases. We'll continue to double check that these improvements remain in good order during our QA process, so there shouldn't be any further problems or the need for you to physically access the machines. 

Hi Brent, 

You should only need to physically grant access to the machine on install (or the first reinstall after moving to the release that has the Mojave changes). Any other reinstalls should be possible without additional physical intervention. 

Caitlin