I think the Seswenna Sector is ripe for exploration and fertile for story backgrounds!
http://starwars.wikia.com/wiki/Seswenna_sectorHere is a full write up of the sector according to Wookiepedia.
Eriadu, nuff said!
Seswenna was a planet in Seswenna sector. It was the original sector capital, but lost its political and economic dominance to Eriadu. Seswenna had been on the Hydian Way, but the Way was rerouted through Eriadu to reflect economic realities. Seswenna, and the rest of the Seswenna sector, were briefly lost to the Sith Empire during the Great Galactic War. It was also the birth place of Conan Antonio Motti, an influent admiral of the Galactic Empire's naval forces.
Adras was an Imperial-held planet. Nezan was a city on the planet, on the outskirts of which there was an Imperial detention center. Around 4 ABY, the planet served as the rendezvous site between a group of Alliance to Restore the Republic operatives and group of Sullustan agents from Alliance Intelligence. After a skirmish with Imperials, the Rebel operatives rescued the Sullustans and fled to the Alliance fleet at Sullust.
Agomar was a planet in the Agomar system of the Seswenna sector. During the Battle of Agomar, the Confederacy of Independent Systems pitted its Droid Army against the Grand Army of the Republic, with the world eventually falling back onto Republic control.
Brintooin was a planet in the Outer Rim Territories covered in plains, deserts, swamps, and a few mountains. It was the home base of the Imperial Hammers Elite Armor Unit. After the Battle of Endor, Imperial Governor Thalkuss maintained nominal control of the planet; but he relied on the presence of Colonel Zel Johans, commander of the Hammers, to retain control.
Dzass IV was a planet in the Dzass system. It was the location of the Lunis-Medix Medical Academy.
Eczar was a world in the Outer Rim Territories' Seswenna sector. It was known for its extensive financial networks. The Imperial agent Vacander had a bank account on Eczar, which was discovered by the Rebel Alliance Intelligence operative P. Essex Yerac.
Luptoom was a member world of the Galactic Republic. The inhabitants of Luptoom were Humans, who were known for their outrageous taste in fashion. Naboo was halfway between Coruscant and Luptoom, which indicated that Luptoom was in the Outer Rim.
Mirnic was a planet in the Seswenna sector of the Outer Rim.
Orryxia was a planet in the Orryxia system, in the Outer Rim Territories near Eriadu. It was home to the Orryxians, a sentient species sometimes given the derogatory nickname "Cats." It was also home to the orycat, a small woodland predator. Wilek Nereus, the Imperial Governor of Bakura, visited the planet and obtained a dental specimen of the orycat but was unable to complete a comprehensive survey of the creature's environment due to adverse conditions. The planet was also noted for Orryxian Catsblood, a popular beverage.
Parwa was a world that was located in the Seswenna sector, in the Outer Rim Territories. The Parwan bounty hunter Derrown originated on Parwa.
Hockaleg was a planet in the Patriim system. The Tarkin superweapon was built in orbit of Hockaleg, with the construction crew living in a spaceport town on the world in between work shifts. Citizens of this world worshiped the deity, Holy Jaf.
Phelarion was a planet located in the Seswenna sector, in the Outer Rim Territories. In was the homeworld of the wealthy Motti family, which included figures prominent in the Galactic Empire such as Lady Thalassa Tarkin, wife of Grand Moff Wilhuff Tarkin, and Conan Antonio Motti, Admiral of the Imperial Navy. The Motti family were wealthy citizens in the megonite moss mining business, established in the centuries prior to 60 BBY, using slave labor. Lady Tarkin erected a solid black obelisk on Phelarion in tribute to Tarkin and named the main starport Port Tarkin. She ran the mining operations for the Empire, but they were sabotaged by Leia Organa, who crashed on the planet after her ship was shot down by a TIE fighter.
Spuma was a medium sized planet in the Seswenna sector of the Outer Rim. It had a number of prairies, mountains, and jungles located along its surface.
Uvena Prime or Uvena I, was the home planet of the Shistavanens (wolfmen) in the Uvena system. The species, capable of hyperspace-level technology, emigrated to other uninhabited worlds of the system, including Uvena III, to prevent strangers from outlying systems from arriving and settling them. Nearby was
Uvena II and the Shistavanen colony world
Uvena III.
The Moshaw Dark Star was a black hole on the edge of the Seswenna sector. The Dark Star Hellions originated from the area around this black hole. The
Dark Star Hellions was the name of a swoop gang in the Seswenna sector of the Outer Rim Territories. They ran spice, smuggled weapons, and served as muscle for various underworld factions.