my gaming group ran a mordhiem campaign last winter for about 3 weeks or so - then all the younger members got board and lost intrest in it... we tried to continue on, but honestly you need more than 4 or 5 people otherwise it soon becomes tiresome fighting the same warbands over and over again!
shame really as i truely enjoy the individualism aspect, and modeling each warband member to be unique...
mind you, all this talk about warbands has really got me itching to build a new marienburger and skaven warband and maybe also go for a couple others too
(hmmmmm... maybe greenies and dwarves?!!)
cheers!