The area highlighted is used as crew parking for various productions at the studios. When the studios have multiple productions happening at once, there are hundreds of cars that need to go somewhere. In 2022, Ticket to Paradise, Irreverent, Young Rock 2 and Nautilus were using every single building on the VRS lot.
The buildings just under the highlighted area are Special Effects workshops, set construction buildings and other offices for production-essential companies. This would effectively proposing to split the studios in half.
While I agree that BOH areas should stay BOH and shouldn't interrupt attractions or guest flow through the park, the theme park support facilities also shouldn't occupy Studio space at the expense of the Productions.