The idea is very good, I thought about it for a long time
Most likely I'll leave them a small amount of bitcoins, even if they fall because it is not known what will happen in the future
And so I have already prepared for complex and emergency situations
I will probably do the same. I'll prepare a portfolio which has little bitcoin and little alt coins. If one of those alt coin survive and grows then they will be happy otherwise I will try to leave them some stocks and maybe house if I can.