Could you give me a battle where we can find more 11 lines of fighting (sector)?
If yes, the model of HW is wrong for this battle...
If not, I think the model is right because you have to send an order to each group in charge of a sector.
For the future, when I'll add the 2 other AI (Division, Brigade).. I am sure this feature will be not used a lot...
If we build an Army with 11 Corps, 22 Divisions,44 Brigades, you have to control 77 entities... crazy.
That said, I don't say sometimes it's not interesting, but no sure this feature will be easy to use.
For beginning, I think the best is to get a good control on the game with only 11 groups
(generally speaking, 2 wings, 1 centre, 1 or 2 reserves... 5 groups minimum... 11 groups seem a big charge!)
JMM