Queueing for buses only works when the stop is served by one route
with one possible destination (no short workings etc) only.

I beg to differ.

Once
there are two or more journey possibilities, it becomes
counterproductive

Why?

unless you have two clearly-signposted queues, as
everyone has to ask the person in front if they want that bus or not.

What's wrong with asking this question. Are we all mute of malice?

Marc.