The thought of miles as a net worth item is silly and you need to do some deep thinking if you value them as anything more than a perk that a relative, spouse or heir may have a little fun with but to include them in new worth is just crazy in my opinion. If anything a little note left behind that says please take a crazy trip after I die using xyz and I have written my account passwords here. Or fly the crazy family in to my funeral and put them up in a fancy hotel so all my miles are burned up.