I'm using two fields from a subject area : OnHand Quantity & Stock Value (EUR). For readability purposes, I like to change their names (display header) to OH and €.

When using Total Columns & Rows, the original field name is conserved :

Grand Total OnHand Quantity & Grand Total Stock Value (EUR)

It would be great to improve the solution to keep the updated name (display header) and also have the possibility to use "Total" instead of "Grand Total"

On a crowded canvas it makes a huge difference. Thanks !