Quite interesting. Is it possible for 3 characters to be created in one sheet and let them die off one at a time during the course of the RP? Because I have an idea that relates to the Temple of Time and the real world ideas of general relativity in which they are able to have powers based on those concepts. 

Also, the characters I have in mind work as a sort of dysfunctional family, but if the chance that one of them does die, they would be devastated over the loss and would have to learn how to cope with their death in order to create character development.