OK, I just did some calculations using the Eastern Gateway bridge number of 12,000 guests per hour during peak.
So with the 16,000+ spaces between the two structures, we are looking at 20,000 per hour as a good guess.
That is 350 guests per minute. including wheelchairs and strollers.
And the system cannot break down, or of they do, easily bypassed and keep the same pace.
Disney went with just walking, and no elevators, just easy slopes on the Eastern Gateway project, and that is what works and will be used on the new Western project.