1313 was planned to be set from 10 BBY—5 BBY. And a fun fact: In Boba Fett: Maze of Deception, which was written in 2003 and took place in 22 BBY, Boba Fett used the alias CT-1313 when confronted by a clone trooper. Coincidence? Although Tempest Force and a large portion of the Imperial Navy was defeated at Endor in 4 ABY with both the Emperor and Military Executor killed and two of the largest and most expensive projects ever undertaken by the Empire destroyed, the Empire remained as the most prominent government in the galaxy, as they still controlled Coruscant. Coruscant was not liberated until 7 ABY during the Seizure of Coruscant, and at that point the New Republic took over. There really wasn't a time where criminals controlled Coruscant during Boba Fett's lifetime. I do like the idea of fighting various alien smugglers, mercenaries, and other bounty hunters working for your bounties.