UX: Formatting of Line Items in a Grid

The ability to format heading & Style options for sub-totals, totals and hierarchy summaries within a grid would allow these to stand-out for users.

Problem: currently there is slight indentation and the formatting doesn't allow for important totals to stand-out in a big grid of data.

I believe this should enhance the visualization of data in big grids versus current total/sub-total fixed formats.