Peter Ledbrook has a good post over on his blog on which I have also made a comment.
I think this is a critical juncture in Grails' history. If you care about the future of Grails you should write about it and tell the world, either on that post or on your own blog.
The ultimate question is: why should 100,000s of developers globally choose to use Grails over the other frameworks out there today and in the future? Yes it needs to be 100,000s for the plugin ecosystem and contributions to be viable because a tiny percentage of people actually contribute.