Do you name them once the king is dead (sort of like a will)? Or while the king is still alive? If its while he's alive, you'd have to name him as soon as you become king since if the king dies suddenly you need an heir before you die. Which would be kind of odd if you have a young king and he has to name his cousin or something heir, although i guess it would be realistic. I think i confused myself. Could we get some clarification? Ideas how the system should work?