As a moderator, I'd like to see an indication in the viewer list of a user's timed-out duration (remaining). I'd like this to be only visible to mods. It helps when a channel has multiple mods to see what another mod has done, and not accidentally ban someone who just needed timed-out. It also helps to know when a potential 'troublemaker' may be re-entering chat and to be doubly prepared.
Moderation logs could show the same potentially!