Hello,
The ability to add a single field containing a customers birthdate AND have that field printed to the order so it arrives in the email for the business to see and use.
To do that you have 2 solutions :
1. Create and use a custom field from the "Address" table via "Hikashop->Display->Custom fields".
2. Create and use a custom field from the "Order" table via "Hikashop->Display->Custom fields" (available through the business edition) and configure it to control in which email it should be displayed.
Is that really true?!? How many subscriptions will I end up with before I can have that one feature im asking for?
HikaShop's editions are not subscriptions but different editions of the component that you can buy with a 1 year free updates, support and web cron service for one website. So you'll be free to use your Hikashop's edition on your website even after 1 year.
Also, if you need the business edition instead of the Essential one, you can always upgrade your Hikashop edition :
www.hikashop.com/index.php/extensions/upgrade-my-version.html
Kind regards,
Mohamed.