This isn't like a car merging onto the freeway, its like adding and removing links in a constantly moving chain that needs to remain the same length. As someone that has operated a gondola before, i don't see how that would easily be coordinated by the operators on both sides if they were launched and pulled of the line manually. And if it was.... during high peak times where someone is always waiting it would work itself out to basically be timed anyways so why not have it be timed in the first place.
It's possible this is something that will have to be adjusted over time based on how long people take to load and how backed up the accessible only line gets, but the major issue causing a long line would be how long on average it takes people to load. So adding more cabins and slowing the rest of the line down wouldn't really be a solution, they would probably just have less accessible cabins on the line if they find out people need more time to load.
I would think it's likely that strollers don't have to use the accessible entrance if the kid isn't in the stroller or if they can collapse it and carry it on which may be something they recommend to keep the accessible entrance line down.
It's possible this is something that will have to be adjusted over time based on how long people take to load and how backed up the accessible only line gets, but the major issue causing a long line would be how long on average it takes people to load. So adding more cabins and slowing the rest of the line down wouldn't really be a solution, they would probably just have less accessible cabins on the line if they find out people need more time to load.
I would think it's likely that strollers don't have to use the accessible entrance if the kid isn't in the stroller or if they can collapse it and carry it on which may be something they recommend to keep the accessible entrance line down.