That is a great idea, but I probably won't think about it until season 7.There should be a "romantic" version of Glaurung's theme to play over their love scenes like the wedding, similar to the way that the parade music from the end of Phantom Menace is a celebratory version of the Emperor's Theme.
Possibly Season 8 since there's been talk of devoting all of Season 7 to the events leading up to the Nirnaeth, along with the battle itself, ie Hurin and Huor's time in Gondolin would be explored during that time.That is a great idea, but I probably won't think about it until season 7.