(Disclaimer: I work at Meteor) I'm sorry that you had such a bad experience with the transition to Blaze. We have been moving very fast on changes trying to nail down a good API for 1.0, which is coming very soon at this point. Hopefully you will give it another try when 1.0 comes out, and the API becomes stable.
One of our goals is to be suitable for enterprise and consulting shops, and that means we will need to declare a point after which we will do everything we can to maintain backwards compatibility. That point will be the 1.0 release.