Thank you for the compliment and comments. Feel free to use the rules, hopefully you guys enjoy them. Pass 'em around, please. Hopefully you guys like the layout, too.
I don't know what a moral victory is either, it was in the Planetary Empires campaign booklet, so I included it, /shrug.
In this case, the most recent attacker (player "c," the originial defender being "a," and the first attacker being "b") takes on the role of the "attacker" and must gain at least half of the total tiles to force both defenders off of the planet. Player "b" can force player "a" off planet by controlling half of the total tiles, but becomes the defender to player "c," and must eliminate him completely. I may end up changing the mechanic if what I put in the rule book ends up blowing up in everyone's faces.
Ideally, the defenders should have the advantage in terms of what rules they're able to take advantage of, but attackers have a pretty decent points advantage. What you mentioned is exactly what I was going for: really difficult for invaders to get a decent foot-hold on a planet, but once they've got it, it's like trying to get rid of mold in an old house. Hopefully it'll actually turn out that way!
I decided not to directly link fleet engagements and landings because of the way the
BFG campaign rules are set up. If you engage an enemy fleet instead of launching an invasion, you can hamstring the opponent by playing a more conservative game and not risking your own ships. For instance, if you and I would play the campaign together, you'd initiate an attack on me, and if we rolled up a fleet engagement, you can cripple my cruisers at range then disengage. You wouldn't get any benefit in terms of being able to repair your ships at the end of the campaign turn (end of the week or however long) by counting as owning the system at the end of the turn, but neither would I, and I would have severely disabled ships for when you did launch a planetary invasion. having a crippled fleet would make it very hard for me to defend against you, making it easier to get more assault points and more rolls to land on planet.
If you do use the rules, please please please
PM or email me to let me know how they worked and how you all liked them.
All the best,
-Jordan