One thing that's always bugged me and sorry if this has been answered elsewhere: wtf happened to Martok's bitch-slapped son from Way Of The Warrior? Unless I missed something, feels like he's never mentioned again, and fact that Worf was the one who dishonored him doesn't seem any impediment to him being accepted into M's house.
I've often wondered this myself. Technically, Martok doesn't know anything about Worf and Drex getting into it because that was changeling Martok. I always figured that was one of the reasons Sirella doesn't like Worf and didn't want him in their house.