Well, everyone like WordPress there is no doubt. However, when it comes to.interesting q2a with WordPress, I have made a WordPress plugin before as well as some snippets. It was not so advanced but back and forth some content.
That time I realized that it is if not impossible but quite difficult to integrate q2a with WordPress in such a way so both can leverage each other's features and functionality.
The reason might not the WordPress but the Q2A. WordPress has a great API which allows devwlopers to do almost anything they can think of. Unfortunately, Q2A doesn't have that flexible API yet and you may have to modify core to implement some feature. For instance user roles.
I am a WordPress and Q2A developer and already tried to combine both but stock at one point where I found some constraints in Q2A. I am still open to go ahead with this idea with the paid job but honestly, to achieve what you are looking for, this may or may not required touching the core which is not good at all for future updates.
Please provide me exact details what you are looking for. So if it is possible than I would love to work on this project.
You can PM me further details or email ID for further communication.
Lion Theme is Available now
http://q2amarket.com/themes/