So much this.

Disabled: Go to page and it says it's disabled.
Active: ~ before username
Suspended: ! before username
Banned: - before username
Deceased: ∞ before username

The main idea is to be able to browse through one's own watching list and look easily for disabled accounts that have piled-up through time so that they can be unwatched and not be part of one's number of watched users. It could either override the aforementioned markers or accompany them. eg: ~Pujot [D] or ?Pujot

Ooooh I see! Yeah I like that idea!

In that case, the X would need to precede the other markers, since some usernames have X's at the start.

eg:
X~Pujot
X!Pujot
X~XxCuddlySparkleWolfxX