I'm ok with Melian having "mirror of Galadriel powers" but we need to have it be... different? Like, not a mirror. Melian served Vana and Este. Este is where she learned of healing and rest, what if her affiliation with Vana gives her some powers of flowers or birds? What if her "mirror" is flowers, or leaves or birds forming her visions? And if we go with the Mirrors abilities, it does show "some things which may come to pass" so Melian's mirror could show Beren imprisoned before he's actually imprisoned.
My bad, I searched for Narsil in thw folders and thw first thing that popped up was that Emeldir had it, I should have actually read what it said
Andreth meeting Beren and/or Luthien is an intriguing prospect.
I say we save Dior for next season. Having them set up home in Tol Galen is a satisfactory conclusion to the story, IMO. And Dior isn't born until about two years pre-Nirnaeth, per published materials. I know we fudge some of that stuff for the sake of storytelling, but I think this is one we can save for S7.
Sauron, I think we should show departing Beleriand, but save his interactions with the Easterlings for next season.
Bombadil... I dont know. We could show him witnessing Sauron going East, but that would seem a bit redundant to last seasons cameo. In frame, we know Aragorn knows Bombadil, so maybe the very last tag of the season could be Aragorn travelling and running upon him (for the first time) singing a silly song and Aragorn is all "what the...??" (Example: the last scene of Moon Knight, episode 5)
Setting up season 7... I think the main thing is that we set up the Union of Maedhros. Show the sons of Feanor hearing about B&L success and thinking that Morgoth is not unasailable, etc. MAYBE go as far as them sending the messenger to Thingol regarding the Silmaril, but that could be a S7 thing as well. Tying some stuff up with Nargothrond and Orodreth. Maybe Morgoth draws the dragons back in from Tar nu Fuin? I dont recall much of the dragon breeding stuff being brought up, but we should tie it up I think.Gil-Galad, Celebrimbor, Oropher stuff, I'm not sure what loose ends are there once we get there, but they should have something solidifying where they all stand. Maybe have Annael moving into Mithrim (?- I think that's right) before the end of the season as well.