It would be nice to have a way to do custom quotes without having to go into the calendar and change prices. Nice to open the quote and put total rents or price per day. I suggest this gets on the long list,
I'm confused by the request.
Once a quote is created, and before it is sent, you can click on the [Charges] button and then edit them. You can add line items, or discounts or surcharges, or change the amount being charged for particular dates.
What are you trying to do that this capability does not allow for?