Add Default Axis Expression to Mod Manifest

Would be great to be able to set default expressions for mods - will work well for creating internal mods that always have the same columns present and make adding a functional mod a 1 click process for users. Example a wafer map that always has a die_x, die_y column should set x-axis expression to [die_x] and y-axis expression to [die_y] by default (saves users time and confusion)

Another Example:
Trying to create simple histogram visualization but the dataview automatically combines all rows of the table with identical values for the axis into a single dataviewrow. So we have no idea how many physical table rows a given dataviewrow represents and can thus not make an accurate histogram. Work around is to add another axis that forces a unique value for each row so all rows come into the dataview. If we could force this axis to have an expression like "RowId()" then the user wouldn't have to worry about manually configuring this axis every time they drop in the mod.