I discover a new problem (at least to me). You can have negative number of troops to defend a conquered territory when you have a large number of Dark Knights (20M+)
Please fix the bug that slow units sometimes take over the speed of a much slower unit. Really frustrating to see a game ruined by a few Juggernauts suddenly racing to the end in under 6 seconds even with Ice Towers in place.
Barracks, Arenas and Castles are utterly irrelevant to the game as it is now. You can easily complete it by just building Farms, Markets, Gold Mines, and Cathedrals once you've ramped up a million Black Knight is successive restarts.
 "Idle Conquest"){kind=icon}
 "Prime World: Defenders"){kind=icon}