NapalmKing wrote:The reason I was thinking about -1 is I want it to have an effect but not be crippling to the attackers.
Another idea that I didn't post is that it could be certain units have amounts of moral and if enough 'scary' things happen to them then they spend the next turns actions sprinting away.
I think the best solution is to playtest these ideas.
For some reason everyone gets this idea at some point and no one can explain to them why it's a bad idea. Then they actually try it, and they realize what everyone else was trying to tell them, and then they go and try to tell the next guy who comes along who won't listen to them either.
But just setting up a quick battle and playtesting it will give you a very hands-on understanding of what it does to the game flow.