Since this sub-forum is pretty much a ghost town, I expect this thread to be a slow mover. But, the deal is, with our large number of subway lines in major (and even not so major) cities, subways are often the best way to travel between point A and point B. That having been said, when you have 20+ lines in a given city, transfers are inevitable.

I'm going to kick things off with Shanghai because I live here, but I have some opinions on Beijing that I'll get to in subsequent posts:
1. People's Square was #1 on my "to be avoided list" 20 years ago, and still holds this title
-nowadays, it's usually possible to avoid for any given trip
2. Xujiahui is a close second on the "to be avoided list"
-I actually live within 100 meters of Exits 15/16, which are convenient for Line 9, but Line 11 is an additional 200 meters away, and line 1 is close to 1000 meters
3. I would rank Nanjing Xi Lu as #1 or #2, but the thing is, it's really 3 different stations
4. Transfers between any two lines with numbers >7 are generally pretty good because they are newer, and the planners seemed to get their act in gear around 8 years ago
5. Jing'an Temple (Line 2 to Line 7) kind of sucks, but it's often better than other options
6. Lines 3/4 are annoying in cases when they are above ground, and the transfer lines are below ground
7. Although I rarely go to Pudong, Century Avenue is best designed transfer station in the system