This has just come to me but it seems a decent enough idea that could be added to profiles or if not as a sticky at the top of Misc. Just not sure how good of an idea it is.
How about showing an expertise for each user if they wish to add it, and a search function for this user (like a yellow pages!) if people would like to ask any questions.
For example, a mod has asked a question in the Misc forum and I pm'd them with some useful information that could save them a lot of time and grief. Sometimes I don't get on here as often as I would like and I could have missed this post or been too late to offer assistance.
If we had our area of expertise (for example mine is motor trade and finance) people could ask for assistance from us. If you don't want to be hounded by thousands of questions then simply leave the field blank.
It would add rep to those who are genuinely going out of their way to help and create a tighter community.
Anyway, just an idea. Be kind.