SoD Zones had a lot of little quests that netted decent exp and chronobines. It was sort of expected you would be doing at least some of those in a normal exp session. It wasn't the worst grinding expansion, but I wouldn't say it's a good one going back, either.
I used to have a list of missions that netted the best time to chronobines ratio which also netted a nice handful of aa's in the process of doing them, but I can't seem to find it anymore. On a computer long ago, perhaps lost to time.