[NIX]

I don't know if this would be possible or really useful.

I think there is too much variance in your winrate for it to converge to something useful in a sample size that small. For example, if you're playing in really loose games and go awhile without hitting your draws, then suddenly, you start hitting them, you didn't improve at all as a player, you're just running better. But that could really impact your winrate. Same things with downswings. If you're improving as a player and hit a bad downswing and compound your error by tilting off a ton of money, your general skill could've improved, but your winrate sure went the other way.

Edit: I actually just checked my winrate graph. It's been steadily decreasing for the last 50k hands. I'd hate to think that I'm getting increasing worse at poker in that timespan.