Any day now Brian Kuh's score will be booted from the top 100. So, you may ask, "Whose the person with the next relevant score to meet the chopping block?"
Glad you asked imaginary person!
In my opinion the next important score belongs to Anders Lasbo. He's 91still, and he holds the distinction of having the lowest scoring killscreen on the high score board. So having a killscreen outside of the top 100 will be symbolically cool.
Next is Tim Jackson with his 89th place score. It's the last 80s score in the top 100. Once that's gone, no score before 2001 will be top 100.
Lastly is Billy Mitchell's 873k score. It's not on the board because he has a higher score, but considering how legendary the score is, this would be epic once that happens. That'll probably be a good two or three years before this happens though.
So are there any scores I'm missing?