Does any of the FASA books offer an explanation why they IKS has never been swallowed-up by the Klingon Empire?
IIRC it had to do with not stirring up trouble so close to the UFP and Romulan borders and the fear that the loyal Imperial-race Klingons would switch sides against the empire overall if it came down too hard on the IKS.
What is interesting is that because of the 1st season TNG ep 'Heart of Glory' -where Worf meets a bunch of Klingons who would rather die than live in peaceful times- FASA tied that ep up with the IKS in their TNG 1st yr sourcebook. Yeah that's the sourcebook where the Excelsior could kick the ass of a Galaxy class ship
"No captain kicked ass, took names, outsmarted the machines, and then scored the babes like the Kirkmeister" -Liquidator Queeg