Balance for humans and robots is different. Different play skills are easy or hard and those skills matter different amounts on different heroes . Effectively

Balance for humans and robots is different. Different play skills are easy or hard and those skills matter different amounts on different heroes . Effectively instead of balancing for fair heroes, you'd be balancing for maximizing the performance of heroes with the small human-robot gaps. It would be very easy to make the game boring because in some sense you're making the easy to play heroes the best ones and I think many games aim to be biased slightly in the opposite direction.