Thanks for the feedback. In the future I'll update it to allow you choose your own number of color weights.
In my systems, I often use 12 stops for neutral colors and 6 for all other colors.
Why 12? Dark mode! It's hard to depict elevation in Dark mode with shadows, so we use color instead. For that, you need stops 700, 800, 900 & 950 for various levels of elevation. I then added stops 025 and 050 so i can repeat the same in light mode.
In the past, I have gotten away with using only 10 for neutral & 4 for vibrant colors respectively in the past.