Just have been to HK at Admiralty/Center. And the stairs up and down to get anywhere over the streets is super annoying. Especially at night. But surprisingly not much traffic, and lots of buses and trams. But maybe that was due to new year.
That's because you have been conditioned to look for the streets. The midlevel is amazing and protect you from the heat/rain plus makes your walk less of a pain (no need to cross roads).
One of the things I miss most about HK, having grown up there, is just how far you can get in a (roughly) straight line without touching the ground. There were parts where you could go for 10-15 minutes at a stretch, and that was ~25 years ago. I can only imagine that's grown since.
