Right, but I'm talking about the pandas API. Stuff like how easy it is to remember exactly how to do aggregations, transformations, etc.
https://twitter.com/Chris_Said/status/715249097326768128
https://twitter.com/Chris_Said/status/861244045535756290
I could be wrong, but I'm pretty sure that these would be solved by pandas API design improvements, not with numpy improvements under the hood. (NB: As always, a big thanks to the developers for all their work.)