When you get to BG5, you will probably quit being a klingon. There is nothing to do. All you have is dailies. Infected and the Cure are super easy and boring. It's not even interesting on the first go around. Have fun doing nothing.
Im sure you are right ... since I quit being a Fed at RA5. If I'm lucky, there would be the Romulan faction for me to reach the RA5 equivalent and then be bored as well.
The Ground War Zone is near Gonalda ... it is pretty barren most of the time, but at least the Borg behave more like the Borg you know and love.