My personal favorite character is Sigrid hands down. That being said, its great that the three main heroes of each faction have matching army units, but it would be interesting to see character specific units in the future. I guess it just puts more personalization to the hero commanders we play with, such as Sigrid having more vampire style units instead of skeleton forces. I just completed her Arcade style on Hard which was challenging and rewarding of its own to watch the cutscene at the end where she takes over the world. Maybe it could be sold as a DLC?