Just do me one GIGANTIC favor... Do not take a wonderful game ( Mount & Blade: War Band ), and complicate the heck out of it.
In my opinion, what makes the Mount & Blade games so fun and addicting, is it's simplicity and of course the Medieval carnage.
Adding minor things is ok ( More Factions, environmental changes, a little bit more of an immersive story and perhaps some more quests that are less annoying) ( like escorting cattle.. ugh. ) I am a warrior, not a herdsman.
If you plan to go through with the whole bartering idea, keep it simple. ( This isn't Elderscrolls Oblivion.)
If you plan to make large cities where it will take us days to find the Guild Master, park him at the front gate.
If you plan to use battering rams, catapults and other siege equipment to make sieging more interesting, keep it simple.
Keep diplomacy simple. ( this isn't an Empire: Total War game )
If you stay with the environmental changes I seen in the video, cool! And if it's blotchy nonsense like Viking Conquest where you could barely see your troops, I may throw up.
If the hero leveling system changes, keep it simple. ( This isn't an RPG, where we need 7 tiers of special skills )
Again, in my opinion, Mount & Blade has been successful because of it's 'straight to the point' simplicity. Don't ruin it with hours of pointless micromanagement, complicated trade and diplomacy systems, like I have seen sooooo many good titles destroyed ( and I am not the only one who sees this ), by following some 'next generation', nonsense.
Stronghold series, Rome series, Civilization series and many, many, many more Overwhelmingly Positive titles that have gone to Mixed and Negative.
I beg you... Don't ruin this. Don't do it!! Please don't do it! If you are going to ruin it, name it something else. Like Ram & Slam: Carnage Unleashed or something of the barbaric sort.