I set up settings for a sandbox mode world, and for the aging the overall lifespan of the nichelings is 90 days (5 baby, 10 child, 15 teen, 60 adult). Although that caused some problems with the rogues--every single rogue I see has been either a child or a baby. I think what might be going on is that the rogues' ages are still trying to conform to the default settings--with a 25-day lifespan--rather than my settings, where I had put a 90-day lifespan. So I recommend the age range of the rogues to be equal to the age range the player set up, or maybe even customizable on its own. Thanks!