I believe in good documentation and articles for any project.
Velocity will have good set of docs once it get released.
Don't expect them from the authors but someone will do it.
I don't think velocity has any plans for Meteor 1.0, but I'm not sure exactly.
I didn't touch Laika since Velocity. I've much more important(and interesting) projects to work on :)
So, I didn't try to add it to Velocity and hope mocha-web does something similar.
Sam and Josh are working on books on testing and I think it's a good thing. Since someone can jump start with testing very easily. And that's a good way to ask something from the community for the contributions they made.
Tinytest is for packages and I used to hate it back then. But I got used to it and now it's okay.
So, keep calm and velocity will be great. Give them sometime.