I might try painting the dwarves in battle for skull pass and forming the ones I paint the least crapiest into a mordheim gang. I have started converting an artillery crewman with a beer in one hand so he has no armour. This unarmoured drunk will count as a trollslayer ( he may be a drunk but he is a mean drunk).
I will definitely use the engineer model and I wll definitely use an ogre but what should they be armed with?
Finding opponents might be a problem so change the rules so
people with a warhammer can throw together an interesting gang straight away.
Maybe state that one
one henchmen can have a warhorn and one henchman can be a standard bearer .