Funny, just did this exact thing over the weekend. Teamed up for some group system scouting 1,000 LY north of Colonia. We found the system we were looking for, then began a group search for the iron magma volcanism that exists there. Found it.... and began racing around like lunatics. No shooting. No scooping. Plenty of fun.
Repeated the process a few days ago. Four people group searching for water geysers. Found a great site, and had a lot of fun racing around in SLFs and SRVs. I've mapped three new SRV courses in a week's time and am loving (most) every minute of it (POI bugs notwithstanding). And again: no shooting, no scooping.
Know what would have made it better? If I could have told my wingmate Jonuss (who blows up EVERYTHING) "No, don't go back to the station for more SRVs. Jump in my ship and deploy one of mine. I have plenty."
That owns, but in terms of multicrew, this worked because you all had your own ships there. If you'd all been on the same ship, it would've been different. That said, I agree that him being able to jump into your ship and drive your SRVs would've been great. And I'd point out that you would be able to do this regardless of whether it was "instant teleportation" or "same system required" or whatever.
But yeah, this kind of thing could be cool, and facilitating this kind of experience is exactly what I was asking about in terms of what might be compelling exploration play for multiplayer. Thanks.