I'm interested in this too. IMO there's actually a huge benefit to being able to concisely represent 3D / 4D data (i.e. xarrays, slices, datasets) in an easily

I'm interested in this too. IMO there's actually a huge benefit to being able to concisely represent 3D / 4D data (i.e. xarrays, slices, datasets) in an easily digestible text format. Mainly thinking about this approach over e.g. the netCDF format or deeply nested JSON.