Validation tools for cloud optimized datasets (xref Tool for validating geo data/services moved to the cloud? - #7 by rabernat , but including both new datasets and migrated datasets). In a discussion with @rabernat a couple years ago, he pointed me to great_expectations as an example of this being done well in other fields.
There’s also pandera which works with Dask dataframes
https://pandera.readthedocs.io/en/stable/dask.html?highlight=dask
I’d like to also propose better exploratory drill down support for multi-dimensional datasets. We are starting this here for a project, but the project itself is winding down: Add support for popups on selection streams by philippjfr · Pull Request #6168 · holoviz/holoviews · GitHub