I would like to have more quest in game ... at least for now . Because my hopes are going to M&B 2 for more things that you can do in the middle ages . For example , I would like to tame wild horses ( or at least catch ) , to hunt animals or to be a blacksmith .
Unless they've changed it since I last played it, Rigale has hunting (though you don't actually hunt, it's a random chance thing) and blacksmithing. It's a good suggestion though. I've been playing Darklands recently, in which your characters can spend a day in town working various jobs, depending on what you're good at.
Definitely more political intrigue other than a small relationship points rise/hit. Being able to usurp kings and backstab the other lords properly.
Also I've noticed a sore lack of story based mods that have quests which add onto each other. Where you complete a quest and it unlocks a new one after it. The tutorial quests at the start of the game are a nice touch, but far too short and simple.
It'd make a nice change of pace than the random, generic quests we already have, as well as give more content for those of us who prefer being freelance mercs/adventurers like good ol' Connor. 
Hmmm...quests that add to each other is a good idea, as well as having more intrigue would be good.
Something that improves mercenary gameplay. Or even better: some other quest that doesn't involve the most powerful mercenary leader in the land being told to get cattle for some lord 
One thing I will definitely be doing is eliminating the Cattle quest, and adding something cool in its place.
Another idea, stolen from Darklands, would be to have random, non-combat encounters (of course, they could potentially turn into combat encounters). For example, you might run across a traveling priest who demands a tithe from you. Or, you can encounter a group of unarmed pilgrims who ask you to escort them. It pays nothing, but gives honor. Here's another, this one taken from M&B's spiritual predecessor, Sid Meier's Pirates: Have churches, and missions, which, for a donation, can improve your relationship with a faction, or bless you troops, granting a hefty morale bonus.