I always found it would be nice to have an editable Data Table, so not only you can add it to your analysis, but a user could actually go and add lines or edit cells in that table (directly from a spotfire table for example) and would have the ability to persist it in the backend as
Use cases could be storing/changing objectives, configuration data (better than hidden in the analysis), fixing incorrect values, adding data without having to write an excel.
just an idea