i could imagine a "surrender button" where the player gives up and notifies the Teleena's where they are so they run off their usual pathing and grab them. having one special scene per alien.
something similar is planned to be added to the enemies in the gallery, like an option to just give up on the mission and become whatever your Teleena of choice wants you to become (~‾⌣‾ )~ A surrender button inside stages i think it's a bit more unlikely to be added