Well, we've got Wordpress in use on MovingBlocks already (which is really Begla's thing, partially set up now to be sort of a "group" thing), so that's certainly a good option to keep. Our wiki is currently Foswiki - which is just something I pushed for as I was familiar with it and knew it could do some of the fancy sneaky stuff Mediawiki doesn't aim for (as it seems to focus on being open and community-like - Foswiki has some nice structured stuff for auto-updates, access control, etc). Forum - I'm not set on phpBB, I figure it was the easy option available on Begla's webhost.
On top of that we've also got Jenkins and GitHub. Longer-term I expected we'd integrate everything together with one user system somehow, short GitHub I suppose. One app becomes primary, rest connect via LDAP. I've done that with Jenkins and Foswiki in the past. I'm sure Mediawiki can integrate with user systems really well, but I haven't looked at the plugins enough to find good access control, structuring, and automation. I'm not sold on Foswiki, just haven't had the time to really dig around with Mediawiki - I just knew it didn't do quite what we needed out of the box.
For a conversion progress - wiki is easy (copy paste), issue tracking stays at GitHub, Wordpress can transfer to Wordpress fairly easily I assume. Forum might be the biggest issue as I'd really like for it to maintain all the posts and user accounts, so unless there's a nice importer for a different tech phpbb might be best to keep as the central system and user base? I think I saw a Foswiki plugin allowing it to integrate with Drupal, Joomla, or something, not sure how the forum would get along with one of those CMSes
.... long story short: If you'd be up for giving it a shot, throw together your favorite related techs, plus Jenkins and a way for us to keep the forum activity (in phpbb or not), all nicely integrated and shiny. Doesn't have to have any content, just be a proof of concept and able to convert over as much as possible in theory. I take it that you have a webhost that can probably handle the setup, if not one of the rest of us probably do. Ultimately if it works out really nice, we tinker and customize it for a while, then we can hook it up to terasology.org which would be our dedicated game / group site
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