Add-on Ask members of a user group


Active member
I am searching for a question/answer addon working similar to quora.

My intention is to give registered users the possibility to ask questions to a group of experts, let's say "car experts" or "artists".

* If a question is posted to car expert John he will receive an email/notification.
* If John answers the questioner is also informed
* Registered users can comment on answers
* Questions and answers appear on the new posts page (similar to new profile posts)
* Questions can be sorted by topic/tags

I have no idea if this is possible and how many effort this would be. Do you think a new content type is necessary?

P.S: what really would be helpful is a tutorial covering the development of a somewhat extensive XF addon (not Hello World ;-) )
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