The link to the PDF map is most useful, and illustrates something I found difficult to understand when in Leeds recently, searching to check what stop the bus I wanted used.
There are simply too many duplicated stop letters in close proximity. The area names allocated to each group of stops is not necessarily easy to understand if you are not local, though could have been made easier to understand if each area had been coloured differently (and I don't recall the area name appearing on the bus stop itself, though I may be wrong on that score).
For example, there are two stop Cs roughly the same distance from the Queens Hotel exit from the station. Is "Station stop C" the one on Boar Lane or the one in Infirmary Street? I do know the answer, but the map could have been so much better.