The Morag Tong are the most boring group of killers that could possibly exist. It's legal to assassinate, and their quests were mostly a shopping list of clothes. Forget the freaking Morag Tong.
I totally agree that the DB quests were infinitely better than those of the MT. Beyond that, it's really a matter of style. As mentionned countless times before, I like my assassins to look halfway professional, and not like a giggling bunch of goth kids high on Skooma and Twilight. Blood and bones and black cowls and hoarse whispers. Good grief. Never laughed so much as I did witnessing the demise of Lachance.
Yeah, the DB were legal. So ? Who did present their writs to the law ? Collected mine as proof I wasn't seen.
*edit* Sorry Shadow, fixed.