We often quote a number of services giving a sum total rather than list all the line items, if we could hide the total of the line item and just give this sum this would be very helpful.
I do this all the time - just a matter of setting up a template then using pricing tables. Can't mix and match, though, the proposal has to show all line item totals or none. Then I put a pricing table with no line items at the bottom to show grand total.
You can now hide the desired columns of the pricing table in the theme designer. Or you can use custom CSS for more advanced customisation.
Any word on this option? It would be useful