Just got back from a week-long stay at Pop. I do really like the Skyliner - it is efficient and well-thought out. I don't know what the passenger capacity per hour is compared to the current bus system and other systems, but to me it felt like the best system to date. The only time we experience a long line was when we left after Harmonious at Epcot. Had around a 30 min wait to get on it then, but the monorail or bus system at MK after a closing fireworks show isn't any quicker, so I'd say the Skyliner did well in that department. All of our mornings were completely fine... we're not rope droppers, just average morning types. Leaving at end of day on other days were fine as well, as we left after closing down rides or leaving a bit early to get to a dinner. We didn't have any ride shutdowns due to weather (that we experienced).
My only complaint is that the skyliner needs to run just a bit longer at night. It currently goes to 10:30pm (if HS or Epcot are closing at 9pm). That doesn't help if you have a late reservation though. We had a dinner reservation at Topolinos at 8:50pm. We ate a normal pace and left when dinner was over (ie, we didn't linger for a long time at the table, or stay around looking around the grounds at the resort). We got out of dinner at ~10:45pm and found the station closed. The castmembers suggested we try the station at Caribbean Beach, so we walked down there... nope closed as well. Ended up having to call an Uber/Lyft.
Had another close call with a late Oga's reservation at HS. We got into Oga's at 9:20pm. By the time we got out and walk to the front of park, it was almost 10:30pm. We made it that time, but it was pretty close.
I know they have to do nightly maintenance on the cabs (rode with a castmember on his day off that does maintenance on the skyliner). But he even agreed they should run at least 2 hours after the parks close. If nothing else, those late dinner reservations need time to get people back to their hotel.
