So I've been cruising around Santjalan for a few days and following this thread, and I've done some thinking. Here's what I've got.
Santjalan and Eleu are pretty good systems to call home between expeditions. They are in a good position to avoid NPCs and Players when coming in from coreward, and they're -for the moment- safely out of PowerPlay.
However, explorers are very much like cats - they go out alone at night, and while they have a solidarity of spirit, don't function well in large groups under normal circumstances.
With that in mind, creating a Nation of Explorers would have similar results to creating a nation of cats: It would be fun to watch, but not terribly functional.
Instead, I think those who have the inclination to build and organize should focus on creating a Nation for Explorers. One that offers services and a safe haven for explorers, but isn't necessarily comprised of the hardcore explorers.
This thinking boils down as follows:
B
I think it's that simple.