PE does not claim to the latest and or greatest, but it is still progressing after 11 years. It's $10 or less. It has a mission editor, a map editor, the ability to add new vehicles, the ablilty to modify the AI logic, and the ability to change the damage modeling.
It's a nice beginner tool for learning how to mod as well as tanking.
I would put the present capabilities of the engine on par with the original Combat Mission BO.
it even plays on Win98 systems, VooDoo Banshee video cards and less then 1 gig ram computers.
As for having convoluded control, the keyboard commands are no worse then Longbow2 or Falcon3.