Since the Grounded twitter page recently presented a question about who the "next new neighbor" should be, I think now would be a good time to suggest a fifth playable character. Perhaps a customizable character?
The customization categories could be split into Gender, Head, Hair, Clothes, and Voice.
Gender: Lets the player choose between a boy or girl. Determines which animations and body/clothing/armor models to use for the player character. Head: Could contain either sliders for specific face parts or preset face shapes. Perhaps both? Hair: Contains a selection of basic hairstyles. Five options per gender would be a good starting amount. Clothes: Contains clothing subcategories for Body, Legs, and Feet. Five options per subcategory would be a good starting amount. Voice: Contains voicetypes for the player character to use when grunting, commenting on things, etc. Could have four voicetypes, two masculine voices and two feminine voices. Perhaps have a pitch slider for more customization?
Color: Every category (except voice) and subcategory could have a selection of colors for further customization. This could be either a selection of predefined colors or a color wheel. Perhaps both? Saved Teens: If the player has made a custom teen, they can choose to save it for later use when starting a new game or when respawning. Gender Filter: Every category could have a checkbox to show/hide feminine/masculine options.
Future Expansions: As the game is worked on, the options available for custom teens could be increased via either content updates or DLC.
