P99 Green is classic in all of the ways that matter. You aren't going to change the fact that human beings play this game and the techniques we use are constantly evolving. This is how it is for all games.
For example:
https://www.youtube.com/watch?v=dZ2XWRpfEy8
Super Mario Bros current WR set 1 month ago. ~35 years of game mechanic knowledge has culminated into a full clear in 4:55.430.