To me it is amazing at exploring data. I wish we had that same interface on every place I'm looking at a table of data.

I can't see it replacing Excel or other spreadsheets for people who make heavy use of spreadsheets in their jobs. For a terminal junkie like me, who wants/needs to make sense of data that is much bigger than my screen, Visidata is much better than a spreadsheet. I can filter and partition data easily.

I used to have to use perl/awk/sed/sort/comm/grep to help me put that data in some format that was useful. Visidata is much easier and faster to use.