How about we pick an age, say 80. If you pick someone in their 80s and they die, you get one point. If you pick someone in their 90s, you get 3/4 of a point. 100s - 1/2 point. 110s - 1/4 point. You could even go the other way and offer bonuses as the person picked is younger. 70s - 1.25, 60s - 1.5, 50s - 1.75.
Might discourage simply googling the oldest living person.
Sounds like a plan to me. Maybe give a bonus point for any unique pick also.
