Basically the problem is that the Jedi are camping on the coolest stuff
Not really.
The primary planet of Cularin has a native population of Tarasin that are naturally attuned to the Force, and have access to lots of cool stuff -- trees that have
really weird/interesting properties with and without the Force being involved, plus a 'sacred tree' that's grown around a ludicrously powerful light-side Force crystal.
The moon of Cularin also has a bunch of lightsaber crystals available to mine, plus rumors of an underground city of metal and giant worm-creatures that try to eat anyone who encounters it.
There's a gas giant with a whole bunch of Cloud City-like platform-cities, one of which is a literal flying fortress built by a Dark Jedi trying to conquer the other platforms, along with a moon that was colonized and populated entirely by droids (it's now a foundry planet, best known for producing those 'mouse' droids that were on the Death Star in the original
Star Wars (aka
A New Hope).
There's an asteroid belt with lightsaber crystals
and lightsaber-resistant metal -- and the biggest asteroid in the belt is used as the HQ of a massive crime syndicate/smuggler's guild that used to be run by the Hutts. Not to mention, the current leader of the crime syndicate is the sole surviving member of a long-extinct race called the Oblee, who were once the native inhabitants of the planet that
blew up to form the asteroid belt in the first place (thanks to a different ludicrously powerful dark-side Force artifact). Technically, the Oblee are still around -- they're basically dark-side Force ghosts, called 'shadow lurkers', and it is theoretically possible to bring them back to life...
TL,DR: Cularin is
weird, but there's a lot more to the system than just the cool stuff that the Jedi know about on Almas.
and you're going to have to get around them to really dig into things.
On the other hand, at least we have a ready-made excuse to build a base there...
