[Suicide Junkie]

Too bad you can't invest resources into a colony, and then let the VI plants improve it into a homeworld.

Although, if you went into settings.txt, and entered below "-40" for the "planet value loss when colony destroyed", then you'd be able to recover some of the material that went into building your colonies & facilities, and then the next colony would be able to VI the planet.

You'd still have to get somebody to come along and destroy the planet, but it could work.