Are banned members no longer getting the "Banned" tag added to their profiles? This seems like an important thing to know, but some members who have been "removed" (to quote) don't have that label under their pictures.
I've let Daniel know about this. This user group should be displaying with a strike-through font for all user groups. The mods do see them that way, so thanks for reporting this. You'll see a spambot I just banned in the image below: Changing their titles to "banned" was something I was doing for a while as I was learning the back-end of things (only Daniel and I have access to do that), but it's a PITA to remember to do. Altering user group structure is something that only the site owner can do.