Ah, yes, but the core worlds could easily be intravenously infused with fun/interest, but with what you say?
In the position of being a core world, there is an unmistakeable chance that it a swarming glalactic marketplace. So, say you're running an organized crime syndicate, like some of you probably are, a great investment oppurtunity would present itself in the form of vast reward from the benefits of the increased movement of people/goods/ideas.
So, something "bad" would definitely be under something "good", and some history has proven this. And the chaos you demand will overrule the tranquil one you have tired of. However, the one thing not wanted with this is, my opinion of course, another underworld, like in KotOR. I would also not like another Davik, just maybe another Go-To. But I don't know.
P.S. Hopefully that makes sense.