Don't underestimate the value of an early standardized test framework. This posting itself is a great opportunity to teach the community what a canononical Meteor application should look like and not having testing baked in makes the code a lot less readable.
I'd like to see what a fully decomposed meteor application is supposed to look like from an architecture perspective but every time I see an example it looks like this.
Testing frameworks force you to break things up resulting in a better overall design. This is what should be exposed to a nascent community if you don't want serious growing pains later on (look at the struggles the php world is having adopting testing and modular architectures)