After playing , for some reason I consider staying and go like Pandora cause Alterra is much greedier. Just fake your death while informing them of the bacteria, the space gun and the quarantine. Sea Emperor need companion in her last days and the kids need nurturing. Make them claim the world as they are sapient/sentient and Alterra or any greedy colonizers would have no legal claim on it once they discover it is already been cured.