Isn't this something that's already been in conversation though? Just not popular? I'm pretty sure I've seen discussion and pull requests for this on HN. I know even the strict privacy setting, which affects fingerprints, does not make it anywhere close to a Tor fingerprint.

I was more suggesting that maybe we can demonstrate the desire of this, to put positive pressure on making this, and other privacy measures, a higher priority of FF

You can't simply submit a patch to any self-respecting open source project on a decision so consequential. You have to do annoying things that mostly get in the way, like convince other people and build consensus.