One of my pet hates when visiting ecommerce websites is not knowing what shipping will be until the very end of the shopping process - and I know this annoys a lot of others as well.
I would really love to see a "check shipping" plugin/module for Hikashop that would simply ask for country and zip code and then display the calculated shipping for items currently in the cart along with a link to the shipping article if it exists. This could be an enhancement to the existing cart module or even be a stand alone module.
Just my 2cents on a way to enhance an already brilliant product.