It strikes me as sort of odd to utterly eradicate an enemy.
Historically, that very rarely happens.
It would make more sense to me that the enemy be reduced to the state of a Minor power, influence be shut off, no longer loses last world.
On the flipside, if a Minor power achieved enough overall ... power.... shouldn't they upgrade to a Major, and start accumulating influence?
Just random thoughts.
Anyone else see the merit here?