I like this idea to a limited extent, as a plugin to be able to assign certain mod powers to a user for specific threads could be a very useful thing.
I would like to have a Image a user can select from a selection of Images when creating a new topic.It should displayed alongside with the Topic Subject if you see the Topic list inside a category, or if you inside a Topic.
The Possible Images should be configured by the Forum Administrator.
Most Forum Software Systems provide this kind of functionality.
There's already a feature like this, just not as fine grained configurable as you mentioned, but nevertheless its there. It's just not implemented on this forum here.
EDIT: I just read this: https://community.nodebb.org/topic/771/topic-image-thumbnail-featured-image/13 Whoops. So you want pre-defined images users can select from. I see now... sounds interesting.
Can you show me the forum that this is already on?
@trevor The second column: http://www.vbulletin.org/forum/forumdisplay.php?f=13
@Nifty Oh... those things, lol. That probably wouldn't be too hard to do as a plugin (and this comes from non-plugin developer. :))
@trevor yes. But it should be a standard function.