Firstly, thank you very much to the developers for first pioneering your systems of combat, horse-riding, lords and fiefs, etc which I had long wished to have before finding M&B. I am a young historian with a deep and fussy interest in those areas.
I have some suggestions (please take them as well meaning).
The most important breakthrough that you need is a deep role playing system. I loved the mechanics, and thoroughly enjoyed the good historical mods, but the thing that I sorely missed was the aliveness and heart. If there could be more dialogue options, more personality and relationships with people it would make a world of difference. Imagine if you could make even one close friend in the game, or have an in depth romance story with a lady, falling in love and winning her over, a courtesy and chivalry element. Less repetitive dialogue, more consequences good and bad, warmer personalities. It would only require some imagination and more emphasis on character building. I understand that you are a private company and have worked very hard, so I am totally patient and understanding about the graphics and game play. I realize you may have a long road to Skyrim quality, but honestly, these simple initiatives will put you on the gaming map. Many people are keen to try a medieval game, but a lack of spirit will put them off. Thank you so much for your time, and I hope this comes across the right way.