Very interesting process. The Arthurian Legends seem to have more centuries to go before anyone thinks we've had enough.
With the recent movie adaptations and the popular series that depict similar time periods or power dynamics, as well as the emergence of heroic figures (pre-destined in a way?), there will always be room for music that goes back to times/styles/orchestrations modern listeners may find hard to listen to.
Your explanation of the assignment, as well as all the choices for every move and instrument adds a lot of value to this piece.