Bunk's development is a glowing example of how The Wire was able to do more with less, more so than any other show out there. The overall slow burn of the series combined with the writer's ability to apply minimalism to dialogue, scenes and entire arcs is a big part of what sets it apart from the rest for me. GoT is very similar to me. Varys, or even more so Pycelle have had relatively little screen time considering how clear of a portrait we have of them.