The large tables issue might be solvable with Emacs. Org mode had two table formats, one of which is a veritable spreadsheet. It's all text under the hood, but

The large tables issue might be solvable with Emacs. Org mode had two table formats, one of which is a veritable spreadsheet. It's all text under the hood, but Emacs (at least with Evil) provides a easy interface to create and populate rows, columns, and cells.