Hi Norman,

I would need to see a strawman proposal of how rasterio's dataset open/read/write API would be extended before I could support the work.

I'm also a bit concerned about the small number of stakeholders for the new GDAL API. It appears to be only the HDF Group (yes?) with only three GDAL TC members voting to adopt it. The rest of the GDAL community seemed ambivalent. Rasterio is a pretty small project and, in my opinion, can't afford to develop code that isn't going to be widely used.

I find the Python GDAL example of using the new API to be underwhelming: https://github.com/rouault/gdal/blob/rfc75/gdal/doc/source/tutorials/multidimensional_api_tut.rst#in-python. I think that functionality already exists with subdatasets, no? If there are some killer new features, I'd like to see them.