Honestly, I don't understand the logic in the last two points. If you're willing to give Bitcoins to the family after death why the set of characters from password revealed to them must be limited? Why not reveal a full password at once? Or you want members of your family to practice the brute- force-technique?
brute forcing is hard to do . even me that im a techy guy. i didnt learn brute forcing and how much more to those elder people that dont know how to use a crypto or can hardly use modern technologies .
they dont learn crypto yet but they are going to learn how to do brute force first just to open your wallet ? lol . not a good idea , just give your password and dont let others suffer . they are not any other people anyway but they are your family and they wont do unwanted things to your money