I’d really love to see some in depth customization options for our character. From what we’ve been shown thus far, I really like the direction WH is headed with the layered clothing approach. So hopefully that flexibility extends into other aspects of the character and game as well (hair style, facial hair etc.)
For instance, if pursuing the path of a knight; be provided with the option (once you’re knighted) to create and bare your own custom coat of arms. Which can be displayed on banners, shields and particular items of clothing.
Love the idea of tourneys (jousting, archery, melee etc.) to not only gain money and rewards, but also (and just as important) prestige and renown for your character.
Following on from those two points, a knight, especially one with money and prestige, was someone that would lead men. Being a landed knight, possessing some type of land or holdings would be a natural progression point IMO. Being able to then build and develop those holdings, in addition to fitting out and equipping your war band.
This prestige and renown should directly impact NPC perception and reactions towards our character. For example, if we’re a landed knight, with renown on the battlefield and tournament circuit; unique persuasion and/or intimidation options may present themselves during particular dialogue sequences. Other unique events and side quests should also open up to you once your station and prestige reach a certain level.
Realistic and period accurate combat techniques with a skill development tree to reflect those, is an absolute must. Realistic damage, and gore… to really capture the mood and brutality of medieval warfare.
There’s heaps more, but everyone’s covered most of the stuff above anyways.