This would be an excellent time to use Community Software, or even Distance Learning Software, such as Moodle, which allows not only forum-based communication, but more interactive discussions via its own chat.
It would also allow PKP to create lessons, so that other developers can build their knowledge, especially in creating Plugins through tutorials and lessons.
At IBICT we are beginning to discuss replacing local on-site training sessions for virtual sessions. These would greatly improve our impact and reach, as well as make it easier for disabled users to learn how to use the software. Maintaining content and lessons would be much easier as well.
For a limited training staff that we have, this will surely be a step forward.
I believe that PKP would also benefit from using something like this.
Forums are difficult to handle, specially when there are too many questions, sub-forums and few moderators to deal with all the questions.
For users, it is many times difficult to find what you are looking for especially in a different language.
We could discuss creating language-based communities, which would reach greater audiences.
I've also talked about having PKP Chapters (this is something borrowed from religious groups!). Where you may have local chapters of a church to reach more closely to a specific community. In this case you'd have a PKP for Portuguese, Spanish, Turkish, French, etc...
It will be difficult though, for these communities to know as much as the PKP Team quickly. The gap between the PKP Developers and the PKP Branches/Chapters has to be very small for this idea to work.