I mean, they could do that with the Studio Tour shuttles and have it be every other row. The only question would be where and how people queue. Totally can be done with some next level brainstorming. And it'd be almost an hour long, I'd buy a $40-60 ticket for that.
I'll do a quick brainstorm:
Okay, reservation times. Let's say every 15 minutes.
Guests must arrive at least 30 minutes early prior to their reservation time.
Stage 1: City Walk. If you are too early for your reservation time, you must wait in City Walk.
Stage 2: 30 minutes prior to your reservation, you will be able to go through security and line up at the gate in socially distanced holding areas.
Stage 3: 15 minutes prior to your reservation, you are now able to enter the park. You have 15 minutes to arrive to the Studio Tour plaza. Grab a bite, bathroom, whatever.
Stage 4: At your reservation time, you must now be checked in at Studio Tour queue, also which will be socially distanced holding areas as oppose to the usual zig zags.
Your reservation time isn't the time you board the tram, it's just the time you're allowed to be in the Studio Tour queue area. From here, there will hopefully be at most only 3-4 groups ahead of you. Should be on the tram within 5-10 minutes.
This is clearly a 40-60 minute process, but beats the hell out of waiting in a swarm of people like sardines.
Essentially it'd be one group per row. Or two very small groups per row (like 1 or 2 people groups). Each tram experience will be customed on their rows, so big groups that take up more than 1 row can still technically sit together.
After your Studio Tour, you can re-enter the park. Where they want to drop you off, I don't know. Maybe can break it down into two parts.
Stop 1 is the backlot where the usual mazes were, but now it's just vendors and socially distanced eating areas. You can take the usual route from having to walk all the way to the lower lot and up the escalators. No rides whatsoever will be open. Only food, beverages, and restrooms. Any worry points of people wandering around will be blocked off. You must strictly stay within the path heading toward the escalators and the exit. With such limited capacity, this encourages social distancing.
Wheelchair and those who wish to skip the vendor experience can go to Stop 2 which is just the usual tram unloading back at the Studio Tour plaza. You re-enter the main section of the park where you can now exit. The escalators to go down could be no entry -- only those who were at Stop 1 can use this area to leave it. The exit could be the Waterworld exit as oppose to the main gate so the two don't intersect paths too much.
Ofcourse that's just my dumb, laymen thinking within 10 minutes. With some actually experienced theme park scientists (lol don't know what else to call them) spinning that for a day or two, I'm sure they could think of something better that would qualify them as not being an open theme park and such, get them revenue for the park, keep some jobs open, etc..