I'd rather the Dark Brotherhood to be more calculating/restrained and pragmatic in its operation, but its members still retaining the utterly twisted and deranged subtexts and motivations, though more subtle this time. Just don't make them too caricature/Gropaga-like. Leave that sort of wacky goons for The Most Glorious Lord Inglip, who of course deserves a whole new IP of his own!
The more content, the better. As long as it all has synergy with eachother that improves on the game. I would LOVE to have a 100+ hour gameplay with just doing quests and not running off random places in the wilderness. If that happened, I could probably spend more time on one character than I did in Oblivion (about 400 hours or so)
I want werewolves, vampires, dark brotherhood, morag tong as well as well-developed quest lines for all of them... And as far as wereboars are concerned...Please read my post on the WEREBOAR topic thread...