Action bars
There is no such thing as extra action bar, so you can’t macro items to action buttons.
The bar is actually a skill bar, that can only contain skills.
I don’t see any reason they would add such thing as an action bar for miscellaneous actions.
I personally would love to see a customizable action bar for anything from food, tonics to weapons or minipets. It’s a pain to have to click on a food from your inventory when it expires, simply cos you it takes a good while to find what you’re looking for in a bag fool of crap. In general I love the UI, and can understand Anet not wanting to allow addons, but little non game breaking improvements like easy access would really be nice. Can only hope, once they sort out their launch stuff and game goes properly steady, they will look into it at some point