There are just way too many colours in total, IMO. Having 3 greeny ramps and 3 pinky ramps seems way too excessive, for example. There are also far more near-blacks and near-whites than you will ever need.
There's also no strong blues (like, #0000FF blues), which isn't necessarily bad, but may result in things like lapis looking weird.
It's also important to remember that the ramps don't exist in a vacuum. If they're part of one palette, they have to all work together, and by extension, each individual colour should work with every other. This is hard to manage with such large palettes, but should still be attempted.