[Agrajag]

Solution: Add another unit with the same name as the unit you want to become unwishable, but a lower unit number and give that unit the same behaviour as the uber horrors went wished for. (could be done by placing it instead of the current unit and then moving the current unit to a new, later, number)

EDIT: To clarify, this is a solution for how KO can easily make that unit unwishable and in a somewhat thematic manner.