I would like to suggest the addition of a new gene slot for lifespan, of which there would be three: short lifespan, medium lifespan, and long lifespan. A nicheling with the short lifespan gene would live for 20 days, a nicheling with the medium lifespan gene would live for 25 days, and a nicheling with the long lifespan gene would live for 30 days. People have expressed a desire for either shorter or longer lifespans, so this solution would please everybody and add an interesting new eleme