Exactly! And you are continuously moving through those spaces, and they are FAR better ventilated than a movie theater. Almost all of
Disneyland's queues are outdoors and they have shown how they can modify the indoor portions of them in WDW. I can see DL simply holding the majority of every queue outside and then making the indoor portion similar to FP, where they control how many people go through in order to keep it moving and get people boarded quickly, kind of how they do the Space Mountain FP line.
I mean, let's look at which rides actually even HAVE indoor queues, and for argument, let's only count the ones where the indoor portion is
more than 50% of the queue.
Rise of the Resistance
(Maybe) Millenium Falcon Smugglers Run
(Maybe) Splash Mtn
Guardians of the Galaxy Mission Breakout
Indiana Jones
(Maybe) Monsters Inc
Roger Rabbit Car Toon Spin
Soarin
Space Mountain
Star Tours
That's it. The maybes have a partial indoor portion but I don't think it's at least 50%. In any case, every one of those rides listed above has ample outdoor queue as well, and it would be very easy to simply only use the outdoor portion to hold people and let them quickly pass through the indoor portion without stopping.