Stacked table column width setting

As a report author building stacked, table-like visuals, I need: 1) The ability to specify exact column widths numerically (px or character width) for Table and Matrix. 2) In Matrix, an option to fully hide the row-header column (or designate a hidden key) so it doesn’t wrap or affect row height. 3) Consistent persistence of manually set widths when fields are replaced in Values. Today, achieving a table-like Matrix requires workarounds (unique row keys, SELECTEDVALUE measures, shrink row header), which adds complexity for an aesthetic requirement. Numeric width input and a true 'hide row header' toggle would eliminate these workarounds and make stacked visuals consistent and efficient.