Automatic Bundled Products (not via direct link)
The bundled products currently work very well, but unfortunately the only way to purchase the bundle is to click on a direct link to buy both products at the same time.
However, if the bundle code analysed what was in the cart and applied applicable bundles this would be much more user friendly and great for upselling.
"Add a domain to this hosting package for XX discount"
"Purchase an SSL with this domain for XX discount"
At that point the user could "add a domain" for example and the discount would be applied, currently the user would have to empty their cart then click on a direct link to order both.