Might be, though Simple -> Minor makes a lot of sense too for non-attack actions. It's tricky.
It is tricky indeed, as the drone is making the action.
From the drones point of view. The processing power of understanding and executing the command is drones work not riggers. The command is executed in drones initiative round, via its number of actions . So why there would be difference in non-combat and combat command coming from a rigger. It is essentially a command.
From the riggers point of view. He/she has multiple bonuses for initiative dice, thus the number of actions, via VR cold/hot. So if a command is a major action, the expensive and high rating RCC is losing its value. Having 8 drones slaved will be quite hard to use in one encounter. That is 4 rounds of two major actions per round to get them in place.
Command drone as a Minor action makes more sense in this perspective as the rigger has multiple minor actions thanks to VR and can command more drones via his expensive, high rating RCC. Rigging in cold sim, +2d6 initiative dice, so 3 minor actions in total (base of 1 major and one minor + 2 minor for the number of initiative dice) the rigger can move 3 drones to area and he himself can take a major action. Than the drones come up one by one in the initiative round, spending their first action executing the command given by a rigger.
Could a command be move and shoot ? So the drone moves to a position of favourable range and than shoots the target ? Could we use a rule of thumb that a command should be similar to "send message" regarding complexity ?
We though about using a similar mechanic as multiple attacks Minor action, in this case multiple commands. But that is very much on the spot invention