I feel like if the enemies we are facing are at an extreme disadvantage they should probably flee. Like the last enemy in the group who is has 1 hit point should probably flee or beg for thier life. This would offer a nice morality system where sparing an enemy you get favor from your Patereon God or something.
An example would be the single goblin guard that attacked my party in the blighted village instead of calling for help or running away like a guard would.