Love Child: Hold the Line and Black Power

I like the American Revolution game Hold the Line (previously published as "Clash for a Continent") by Worthington Games. In the game, each player rolls a D3 (3 sided die) plus a fixed number depending on the scenario for action points. Each action point allows one unit to move or fire or, with 2 action points, perform a close assault. I've not been entirely satisfied with this scheme: it would be nice if units far from the commanders were harder to control (e.g., costs more action points) and if groups of units could be giving similar orders for the same action point (in effect a "discount" for having multiple units perform the same action).

I have recently been looking at the miniatures rules Black Powder, a 17th and 18th century version of the Warmaster rules. I think there's enough synergism that one could play Hold the Line scenarios using an hex-grid adaptation of Black Powder. I need to play some games, if only solo, to see how this plays out.