The Command effect has been the subject of a lot of heated debate and an even longer public discussion. I've considered it at length and come to the conclusion that it should be kept but revised so that it isn't so open to abuse. Here is the new version:
Command
The action forces the affected character to defend the user and fight his or her enemies. The affected character fights to the best of his or her ability (e.g., expending prepared actions) and to the exclusion of other activities, but is not compelled to obey the user's orders beyond fighting. The effect ends at the end of the current encounter or when the user attacks the affected character.
Thus, Command does one and only one thing: Forces another character to fight on your side. That character doesn't have to do anything arbitrary that you ask otherwise, but they will defend and fight for you to the best of their ability.
Oh the armies those seers will raise...