+1 to all of your suggestions. I'd love to see all of them incorporated into the game

Infinite continues in normal mode if your village dies more than once, like how Virtual Families 2 and 3 allow you to adopt a new family if your current family dies without children, without losing any progress

Hair salon where villagers can color their hair and/or change their hairstyles

More outfits to unlock

Architect's hat for men (currently, only females have an actual architect's hat; the male counterpart is an invisible 'hat')

Option to change voices to your preferred ones (I really love the cheerful 'heys' and 'ohs,' not so much the nasal 'huhs')