Hey, I am having an issue with lazy engines + fastboot resulting in a FOUC. So far, I have nailed it down to 2 issues, 1. [This code](https://github.com/ember-engines/ember-engines/blob/06116a0b4ffdf90208b608d9581016f78a8887b8/addon/-private/router-ext.js#L233) from ember engines will always return true in fastboot... not sure how to fix that one. https://github.com/ember-engines/ember-engines/issues/564 2. [Ember Asset Loader does nothing in node land/fastboot](https://github.com/ember-engines/ember-asset-loader/blob/master/addon/loaders/utilities.js#L33). So even if we were to fix that first bit, ember asset loader would not load the async engines css and js anyways. I propose we teach each loader how to load itself in the browser and in node land. In node land, it would just append a script/link tag to the dom.