I am using qtree on interfaces to implement QoS and fair bandwidth sharing. Each outgoing interface has a queue item shaped to nearly the
max interface rate, below that are 8 items with different priority, selected via DSCP top 3 bits and some exceptions. I use this method a lot,
and it works fine.
Now, on the base priority item I have selected pcq-download-default queue type to distribute the bandwidth more fairly over the users.
I can see that there are usually 50-60 PCQ queues. Is there a way to expand this into more detail, so it can be seen what rate each
of those queues is getting? (similar to the overview I get at top level where I see the total interface and the 8 priorities each with their rate)

I still have not found it, but I really would like to see this feature.
When the queue tree overview shows that one queue is saturated and it is using PCQ, and shows 50 connections, it would be nice to know which IP has the usage.

Use torch

Yes that would be nice, but unfortunately you cannot use "torch" on a queue item...
That would be another nice feature addition!