Probably the smartest thing I have ever done. Why didn't I think of it before:
Playing as HRE
1. Took Metz from the Rebels. Destroyed all destructable buildings. Sent a diplomat from Bologna to Rome to sign the deed and hand over the keys. Result. Happy Pope
2. Attacked by France. Immediately took Dijon. Called in the wrecking crew. Straightened my codpiece, put on a new tunic, and gifted Dijon to the Pope.
The result? A nice buffer zone between me and the French.
Added bonus. The French "mysteriously" get excommunicated every five turns or so. And guess who does His Holiness' dirty work
This also worked with Milan when I took Corsica. I gifted it to the Pope and sat tight. Three turns later, Milan sent a fleet over to try to take it. Milan and Genoa taken sans excommunication for the HRE, then retook Corsica for good measure. No more Milan
If you play the politics right, you can stay on the Papal Xmas Card List, avoid excommunication, and knock the snot out of other factions who just can't resist those weakened settlements.
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