For sure I will only submit people who are interested and committed to dedicate their time, me being one of them.
I remember seeing a while back that there was a TestLink task force out of Japan but I never see any concrete coming out of it (but I might be wrong).
I have a few questions:
Does the team has a test plan? and by test plan, I mean a document which describe how the test setup will be deployed, execution will happen, reporting, resources and the like?
Is there a test specification for test link? From some comments I have seen, it appears that this is the case.
Like anyone else on this forum, we all have a very good QA background. I have used TL for many years and I think the time as come for me to give back to the community

I also think that we should think about test automation. TL being a web application, there are plenty of tools out there to help automation (Selenium being one of them). I came by a posting date of 2007 talking about Selenium but I have not seen any follow up.
I think that the same way there is a dedicated team of developers, we should start creating an organized team of testers. This is a starting point. And I am willing to help anyone who is currently in charge. I have never participated in an open source project so I am not sure where to start ... so please educate me.
I think we should have a centralized test server (I believe you have some resources hosted somewhere) where the builds can be deployed, log accessible by anyone, etc. (this might work out better than VM).
Finally, I am a decent tech writer. If needed I can help in that area. There is obviously doxygen (which support php) but this is more for internal code (If needed I can help if you are interested). I was thinking about something like DocBook (for more formal documentation), or maybe a Wiki.
Anyway, the point is, if I can help, please let me know. point me to the people I should be in contact with.
Finally I have a few other ideas in mind, but let starts with the beginning. Looking forward to help make this great tool rock solid.
/Laurent