Great looking figures!
All games with some kind of command roll have the possibility of troops doing nothing much. Getting the balance right between some friction, and doing nothing can be tricky though, and can come down to a few bad dice rolls.
Sounds like longer movement when activated is working, another approach would be to increase activation chance very slightly, perhaps by giving a general a small number of order re-roll tokens (say 3 in a 6 turn game - assuming you are rolling to activate each unit)?