Product/ Order Export Settings

I have Three questions.  I-  I love that you can add order information to the product export, However I don't see oder_expense as an option. Can we add that to the drop down.

My second issue is I would like for the report to list the lines by order number instead of having a line for each product.  So the line would contain the order info for one line and multiple lines under the products.  There would be gaps in the lines.  I think the Report export does this but there is no button to click to add the  collection association which I need on that report.  Can we add the collections to the export Report?

Lastly is there a way to get a report of open carts?  We are trying to categorize our accounts as visited, open carts, and customers? Having an export of the open carts would also allow us to market to them when they have multiple open carts across collections with out Bombarding them with separate emails for each cart