Can't help with the tool you are looking for, but there's an old trick from the Lotus 123 days (i.e., the time before spreadsheets gained "tabs") that helps wit

Can't help with the tool you are looking for, but there's an old trick from the Lotus 123 days (i.e., the time before spreadsheets gained "tabs") that helps with this problem of adding a row or a column to one table messing up all the other tables. You arrange your tables diagonally on the sheet, such that no rows or columns of any one table intersect with any other table. You can then add/subtract rows or columns from any one table without changing the others. I.e., layout your tables like this (hopefully the box-draw artwork comes through): ┌─┐ └─┘ ┌─┐ └─┘ ┌─┐ └─┘