* For example, what if Excel wasn't an endless canvas, it would seem conceptually clearer if one sheet was exactly one table with known shape (and you can of course create multiple tables in the same workbook).
* whole column should have the same "formula" and the row for sums / averages and other aggregate functions is not positionaly determined but is more declarative and always on the end.
* header columns are a specific row, not just the first of the rows, or missing
I'm not saying such limited "Excel" would be a better Excel, but maybe it would make more sense, be safer and more predictable, for a subset of users. Anyway ... it's just a sub-experiment.
What negative connotations of Excel do you see?