One issue I have with fighting systems in almost all RPGs (most games, actually) is that every fight must be until either you or your adversary kicks the bucket.
You stole a piece of meat at a bazaar and got caught? No, you don't just get beaten up and thrown in jail or out of town, you will be straight executed on sight.
Conversely, you mishappened upon a gang of less than friendly ruffians? No, they won't beg or surrender or run away when it becomes clear that it's them who mishappened upon you, they will fight to the bitter end, as if under the order from the supreme god of everything to either murderize your ass, or die trying.
It's not plausible. Vast majority of fights are not like that. Most of the confrontations involving force end with either running or talking. Not a lot of people want to get murdered or be a murderer, especially over things that don't matter much.
@drq yep. even with animals. but ive also seen positive examples.