I agree the smaller shuttles are worse than the old ones with two levels. However I have rarely experienced long wait times in the 2 years I have frequented the Eagles Nest. Agreed the AC was a great addition.
What is more annoying to me is the number of times we stop short of our gate waiting for rampers to marshall us in. Then, once parked at the gate, it is frequently a long wait for an agent to move the stairs and finally get the door open. Either they are short staffed or they don't care about getting us to the gate quickly when we arrive. I laugh when the captain announces that we 'surprised them' if we are early. Did we just cross the desert on the Pony Express? Nobody knew we were early? haha