It's not possible to have a slower development build which does template->bytecode conversion on page load?
The point I'm trying to make it, there's already a huge amount of churn around the vast amount build tooling needed to write any javascript these days. Part of making a framework with a low barrier to entry is having the build tooling stay out of your way until you're ready to deploy.
I get that's not necessarily Glimmer/Ember's philosophy, I just think it's a shame that using the framework from day 1 requires buying into all of the technology choices around ember-cli.