Right now, we have a large meta-package called meteor-platform which contains a lot of neat packages that people might want when building their app. Unfortunately, since everything is in one package, it’s hard to remove parts that you want to replace - you need to remove the platform meta-package and add in each package separately. In particular, if you want to avoid using Blaze for HTML templates, it’s very difficult.
I think there will be a lot of benefits from splitting up the meteor-platform package into smaller packages that contain units of functionality.
See the full plan and leave comments on GitHub: https://github.com/meteor/meteor/pull/4851