Man, I feel like they could've done a whole lot more with the game then just this. I mean, it'll prob have expansions and mods will prob add all the stuff we can possibly want anyway, but just like someone else in the thread already said, they could've at least taken inspiration from m&b mods and added features like freelancer (the mercenary mod in which YOU are a sole mercenary soldier and can join armies), a crusader kings-ish grand strategy layer of interaction once you hold some land, proper army management, etc.
Not that they won't add (or haven't already added) this, but so far I got no info that indicates that M&B 2 won't just be m&b 1 with fancier graphics and better sieges :v
Which is ok, but it could be more.
Have a look at The Elder Scrolls series. They didn't add much new stuff in Skyrim, besides maybe shouting. They added in diplomacy and other mods to M&B2 though, and there's an influence mechanic. Probably more stuff, even events while going in a town or finding a crime ring.
One could argue that they removed stuff from the ES series with each iteration, but that's another argument for another time. I think a big part of M&B II is the new engine, which allows them to do a lot more. And anyways, it's too early to judge what has been added and what hasn't, because we haven't seen all that much.
In other news, apparently they're going to be releasing the gameplay code to modders along with a full suite of modding tools. "We are releasing our own tools, that we use internally for development but not the engine source. We are releasing a lot of scripting code that modders can get their hands on and change, in addition to providing a load of parameters which means they can tweak core parts of the game but not access the engine code directly."
"This means that, for instance, mounts can be changed, modders can add different skeletons for things like camels and elephants if they like. There is a whole load of extra modding capability of this sort which is expanded from the previous engine we used in Warband as well.We will then make our gameplay code accessible to modders, so they can extend or rewrite to suit their purpose."
So looks like the M&B II modding scene is going to be even more bumpin' than the Warband modding scene.