In all seriousness can we please replace the user agent, and add a new header that is meant to supersede it. We can then freeze the current user agent at v99 with all the other rubbish that's still in it and put real correct date in a standard format in a new header.

I know there are arguments that a new version will be abused just as much, but I think we should be able to find ways to elevate that by, for example, limiting the length of different fields so doubling up of information to mask the truth or detect as two different browsers isn't possible.

We could even design this new system specifically to be fingerprint proof, just report the essentials which is pretty much just the browser engine (webkit/blink/gecko) and version. don't even need the actual browser and os.