Wow, thank you for replying. I'm so glad it worked out in the end.
I remember being blown away by the ResolverOne demonstration video, and if I recall correctly, some others you posted showing some of the other features and functionality.
The fact VisiData (my current 'spreadsheet' of choice) has acquired a sizeable following in that niche, and now Excel is following suit suggests you might have just been a little too far ahead of the curve.