I did a life list for a couple of years. Then the usual thing happened, things slowed down. I might only get 5 lifers a year. If I travel a bit. So the year list came around to keep busy. I think I have done three. But they all look the same, except the travel parts.
I have seen people do elaborate tables of first sitings and tabulate things every which way.
I need new angle to the year listing. Something to make it fun, not just a statistics program.