You’re welcome to try out the metal-views channel of Ember, which is a precursor to full HTMLBars support. The main thing you’ll notice is the lack of metamorphs 
You can grab a copy here: https://github.com/components/ember/tree/metal-views.
If you’re using ember-cli you can just apply @rwjblue’s diff: https://github.com/rwjblue/_____ember-cli-test/commit/abf2ad487c06bc4b536ebba7d625a4ab4ef46128