A lot of players have speculated on factions 5-8. If we get them, we must have a design space for them and not make them reskins of existing factions.
Waiqar-Debuff enemy, bring units back. Tends towards larger formations.
Daqan-Inspiration to resist rebuffs and ready cards, Punch and take punches well.
Latari - High lateral mobility, more access to ranged attacks, overgrow. A more technical play style
Uthuk - Cause panic and use morale deck, fast in a line.
What design space pace do you give the catmen, dragonkin, Dwarves, orcs, etc.?