Prior to the previous version of the software it was possible to open a users profile and see the total number of posts and amount of questions unresolved. This option is no longer available. I think it was useful to determine if a poster is generally following up problems until they are answered and to determine the chances to receive points and feedback.
I think it was a good idea to remove the total number of posts, because the posts to points ratio can be misleading, however I think the amount of unanswered questions would still be useful. Speaking of myself, such a statistic in the user profile will also encourage people to mark questions as answered and mark helpful and correct answers.
Below is a screenshot how it used to look like when it was useful. I would welcome if something similar could be available again.