Edit certain WooCommerce text within theme options, for instance "Order Notes" text and Email text
It's REALLY important to be able to edit the text content of the emails that go out without having to dig into the code and edit the language files. I have used the WP eStore plugin before and it had this capability, in addition to a list of shortcodes that you could use in the emails (http://www.tipsandtricks-hq.com/ecommerce/wp-estore-shortcodes-and-functions-reference-460)
It's also important to offer a plain text option instead of the automatic HTML styling.
PS: I have just seen a snippet of something that looks good and promising -- coming soon -- anytime near you in version 1.7.
Thanks Mike -- I take back what i said below.