I think this Forum already does a great job at answering questions. Only difference to stackoverflow and the like is the scoring system, e.g. you can vote for the best answer or gain some points for giving good answers. I personally don’t think we need motivation for giving answers in form of some points as there are only a few unanswered threads here.
The forums are intended to be a place of not only questions and answers, but discussions, which Q&A systems are not that well suited for - or better said: they’re restricted to a clear distinction of questions and answers.
Also splitting the community over multiple web-based communication forms of similar aim is contraproductive from my point of view. There should be exactly one station for each task, e.g. manual for education, blog for interesting announcements, launchpad for bug/feature-request tracking.
The advantages you mention all look fair enough, but some are really optimistic or could be said about phpBB in same way. E.g how does this system prevent double questions or how does it make searching more effective?
While a pure Q&A system surely has its point, I think it’s better to stick to these forums for all user to user communication by now and maybe begin here with including some features (syntax hilighting anyone?).
I think one should try stackoverflow - as it feels much different than anything before it (e.g. yahoo answers).
There is no point debating about it - if you did not try to use it is there?
The case can be made FOR - and AGAINST anything anyone would suggest. Both can coexist at the same time, without splitting anyone.
See: answers.unity3d.com/
and forum.unity3d.com/
It’s not my intention to “convince” you guys - I am just giving you
an idea
help in settting it up if you choose to use it.
I do agree with some of your points (e.g. discussions are better on forums vs q&a site) while maybe not some much on others (enhancing forums with syntax highlighting, custom layout etc… is a PIA in php-based system).