Load config based on
@trentmwillis and I talked about something like this today for one of our own use cases. There is a weird interplay of issues here between Fastboot, lazy engines, app code, and our current asset manifest insertion strategy (which consistently rewrites the meta tag as time goes on since we never know when we're "done").
This is something that needs further design discussion prior to us deciding if and how to land a feature that does this. Regardless, this is a fantastic straw man.
Would you be willing to rebase onto