1000 Year Game:
1. Any character of any alignment. Maximum level/CR 18.
2. Each Domain turn will encompass one season.
3. Starting cash 440K, remember, this is not just a personal fortune. You have to build things like fortresses and trade routes. Not to mention paying staff...
4. You may buy magic items at creation costs, but you will still pay the XP costs, and fall in level accordingly. Full cost will incur no XP cost.
Some Character Suggestions:
A religion, starting with a Prophet
A dragon starting from hatchling on up (do not start with standard gold)
Lich, Vampire, Mummy, any undead really.
Illithid Brain Pool
Tribe of Humanoids (Goblins, Orcs, Lizardfolk, etc)