I figured it would be like Brutal Legend, only with complex AI. You control troops with Gamespeak, and do basically no micromanaging in fights that you aren't present for. It would not all be battles, managing resources and building settlements and industries is a game in and of itself. You send workers out to chop down/regrow forests, transport resources to base, and have soldiers and security forces reinforce such regions or patrol the perimeter, before gathering a platoon and send them out to raid the neighbouring encampments in a large open world. This is all done by you on the ground, either by chatting to the workforce or to your chosen Lieutenants over a papyrus/projected map. Part RTS, part SimCity, but all controlled by spoken word by your avatar(s).
Battles might be planned in advance with complex manoeuvres, with only simpler commands like "charge!" "commence phase 2" or "plan B! plan B!!!!" during actual engagements.
If you didn't know what you were doing you would pick up the game and see an RPG or action adventure. You would have to realise that sooner or later those NPCs fall under your command, and will need to be ordered to do something new.
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