Suggest solution to the OP?

[jomaxro (Joshua Rosenfeld)]

@mpalmer

There are settings to allow admins, mods, and various other high-value personages to tick “solved” on a post, and I think that’s about the best you’re going to be able to get.

We do this quite a lot on one of my sites. I’d say 80% of the content is “questions” or “issues”, and our mods are quite quick to mark topics as solved. We only started using the solved plugin this year, and we’re starting to see more users mark their own topics as solved. I think it’s just a matter of reaching that “critical point” where people know what “solved” is, and they start using it themselves.