These are definitely good news.
Given that most devs are (had been) complaining about meteor “force feeding” its choices such as mongo and blaze to developers, and in light of recent abundance of especially front-end alternatives, I’d really like to learn how the space-pieces fit together and which ones I can swap out in favor of “x” should I choose to.
Also, CQRS/Event Sourcing is actually a great solution to a heated problem currently being discussed, so perhaps you might want to chip in.