OK, I see the issue. If they click on the link in the shopping cart page, it shows them the edit options page for that cart item.

But you want them to be able to choose from the cart either
i) Edit the item
OR
ii) Add another of those items, (and be able to set a different set of options for it)
(Please correct me if I didn't get it)

You are right that the current mod, defaults to Edit Mode if the user clicks on the item title in the cart. To add an "Add another of these" button as well as the current "Edit options" link. It is not a very big job.

So small I do not think I would charge for doing it. But I am really busy and can't committ myself to providing decent support. Which is the other reason why I won't charge for it. (It is also the reason I haven't released any of my other mods. Is that bad?)

When do you need it by?