For one, there already existed those on Fallon who could add elements to their archery. However, such fellows were those who Sparked with such an ability, so they were usually able to use only one element with their archery if that was the case.
It was unlike Reina who could use any of her five elements as long as she figured out how to merge the two. Its power would also not be fixed at a certain level, able to grow as long as her technique grew and her power as a mage developed as well.
Another issue was the fact that Reina needed to attach the elements to the arrow semi-permanently. This was one of the main barriers blocking her from achieving her goal, as spells were created within then executed externally in their completed form.
