Something I thought would be cool is have a clutch of eggs from a pairing like Pastel. Lets say there are 5 eggs. Have five people put down a payment like $100 on a specific egg (number the eggs). When the eggs hatch they have a chance of getting a female normal, male normal, pastel male, and a pastel female. So you pay $100 for a specific egg and you might end up with a pastel female but you might end up paying $100 for a normal male. It would be an interesting game.