[Alias({second: [secondAndHalf, quarterToThree], first: [Initial]})] 
public static void Member1(string first, string second) { 
  // Here the user will always use the given names: first and second.
  // which means the user cannot use the param by its nickname
  // inside the method scope.
}

private static void Caller1() {
  Member1(secondAndHalf: "secondly, this is not a bad idea after all",
          Initial: "Initially it sounded moot... :)  ");
}

private static void Caller2() {
  Member1(first: "1st",
          quarterToThree: "almost there");
}

private static void Caller3() {
  Member1("one", "two");
}

public static void Member1(string first, string second) {  }

public static void Member1(string first, string secondAndHalf, string devNull = null) { 
  Member1(first, secondAndHalf);
}