Simply copy and paste the URL from your adress bar.
That said I'm not so sure about this. After all it'd mean walking around etc. - not that I'm against it but it has to be done properly. And it wouldn't be that easy.
If it doesn't have any real gamplay value why add it? You'd need models, proper animations etc and eventually end up at the point of killable pilots on strafes etc.
If it would be done right it could be awesome, I agree. We could hang around on the ground etc.
But people would quickly be overwhelmed by the possibilities and so would the devs. I'm not really seeing a chance of this getting implemented soon.