8/8 FREE, PROTECTED
Re:Need rule clarification and some other thoughts
1- They cannot retreat except with a Town Portal card. The other player cannont simply move out on his turn because the battle happens immediately upon the completion of the Move phase of the player that creates the conflict, thus by the time it gets to the other player's Move phase the hex in question is already cleared of one of the players' pieces by one way or another.
2- Interesting question. I'd say sure, why not? It's destroyed in terms of the player who onced owned it.
3- I think it should definitely still be worth 3 points to you...otherwise it would make no sense to make them worth points at all - the victory conditions could have just been lowered by 3 points for everyone instead.
4- It doesn't make sense, actually, and depriving someone of resources is an important part of the game.
5- It's your game - feel free to unbalance it however you wish.