My idea is to follow the intelligent blade from its original awakening through the span of its "life" as it is handed from owner to owner. Perhaps the sword is an unreliable narrator as it tells the story of its life to its newest handler. Maybe the sword has a temperamental ego (like the one that my D&D character's sword had) which makes it think that it is meant for great things but keeps being picked up by (in its "mind") absolute idiots.
I don't know that this is a story that I'm up for writing any time soon. Perhaps the idea can be part of a different fantastical tale. Still, I like the idea. It was also pleasant to have that wave of inspiration gently wash over me again today ... it's been a little while.