TAPIr integration is inefficient

I have been working on one of my modules for Ubercart and found myself learning the new TAPIr functionality and found some Ubercart utilizing this new functionality rather inefficiently. I want to say before delving into my example, I have not looked throughout Ubercart's codebase to check for all instances where TAPIr is being used and I do not know if my proposed method will work well for all cases, I have been primarily working with altering the uc_cart_view_table.

Currently, with the latest Bazaar snapshot, the uc_cart_view_table function that builds the TAPIr table gets called in the theme function of uc_cart_view_form. The problem with this is that now one form is being generated by two separate forms, but this in itself is not the main issue. When the theme for uc_cart_view_form is called, it has to mark all the cart items as been printed without having printing them itself, the actual items are being printed inside of the uc_cart_view_table function. An issue brought up by this is when altering a table for the inclusion of another cell in a row. Each module which wants to add cells to the table will find themselves having to alter both the uc_cart_view_form and uc_cart_view_table functions. The uc_cart_view_table will need to be altered to include their new cell into it, grabbing the items array from the #parameters of the form array and unsetting each #printed element inside of the item they will be rendering out. The uc_cart_view_form will need to be altered to mark each new element inside of the item as been printed so the elements don't get rendered twice, once in uc_cart_view_table and once in uc_cart_view_form.

To solve this for uc_cart_view_form and any other occurrences we should only need to add the uc_cart_view_table form into the uc_cart_view_form by as simply as:

<?php
$form = array_merge($form, uc_cart_view_table($form_state, $items));
?>

Of course there are other ways of adding the table form to the cart form.

I would like to hear any thoughts, comments, or questions on this.