I can see a split of using large hexes for cities and strategic deployment but having 7 child hexes inside each strategic one for precise unit movement working

I can see a split of using large hexes for cities and strategic deployment but having 7 child hexes inside each strategic one for precise unit movement working out. Effectively limiting stacks to 7 units for combat, and also potentially letting a few groups of units move around each other with multiple turns of micromanagement. The corp/army mechanic could also be tied into that.