We are suggesting a connection with the Dwarves and Aegnor by having Maedhros commission Narsil for Aegnor.
Why? We have several named characters with connections to dwarves, which will play a part in later seasons, which need developing. One important character we have yet to mention is Galadriel, who is another friendly Noldor with the dwarves. It's the Sons of Feanor, who are close with dwarves.
The Hosts seemed to like the idea of Narsil being forged for Aegnor well enough, but they want it to pass to Men almost immediately - either via Emeldir or Andreth.
It seemed important to Corey Olsen that there be a *reason* Narsil be forged. He wanted someone to specifically request it for an elf as a gift. His initial thought was that Norn would commission it for Mablung as a farewell gift when he leaves Doriath.
He accepted that Maedhros could have it made for Aegnor after Aegnor's sword was broken (presumably in the Dagor Aglareb). It does seem more likely that Maedhros would be giving Fingon random gifts (like the Dragon-helm), I realize*.
Personally, I think that giving Narsil to Aegnor works because of the names. Aegnor's name means 'Fell Fire.' Narsil's name means 'Red and White Flame.' So, it sorta seems fitting - that sword goes with that name.
I think that we should avoid having Narsil get to Numenor via Elros. Elros gets Aranruth. Any other Numenorean could marry into either Elros' line or the Lords of Andunië to get the sword to Amandil. With the entire Second Age open to gift-giving...we really just have to get the sword to the Isle of Balar at the end of the First Age.
* Cousin friendships:
Maedhros is best friends with Fingon
Fingon is friends with Angrod and Aegnor
Maedhros and Maglor are friends with Finrod
Finrod is friends with Turgon
Aredhel is friends with Celegorm and Curufin
Galadriel and Aredhel are friends (in our story)
Narsil is the sword of the High King of Gondor and Arnor. It's one of the symbols of Aragorn's right to rule the Edain. I waited until I thought, I was up to date, but it seems a lot has been discussed in 4.07, that I am not aware of.
The Elessar, the ring of Barahir and the sword of Elendil are all linked to Aragorn's right to lead the Edain. The ring of Barahir proves he is the heir of Beor, the Elessar was the jewel (if we take one tradition) of Earendil.
This is not just a regular sword, but it will be a symbol of Kingship over ALL the Edain. Only Kings of both Arnor and Gondor will ever wield this sword.
I would prefer the sword to be given to Elendil by Gil-galad, since the suggestion is all the other heirlooms of House of Elros was lost, but it needs to have some significance to the Edain.
I would prefer Maedhros gifting it to Fingon and Fingon to the House of Hador.
Yes the names have some similarity, but Aegnor is just a very vague figure with no connection to the ancestors of Elendil.
An additional point is Narsil is very much the sword of Elendil. Perhaps it would be better if nobody famous wields it in the 1st Age. Glamdring is still very much Turgon's sword and even the sword of the Line of Elros, is Thingol's sword. A possible lineage can be the sword is gifted by Maedhros to Fingon, who in return is preparing to gift in to Turin when he comes of age. The sword can end up with Turin in Nargothrond, but he never uses it as he has his own. This would explain why Gil-galad gets hold of it and can pass it to Elendil.
The more I think about it, the more I like the idea of the sword be made for great warrior, ie Fingon, who then plan to pass it on to another great warrior (Turin), but for some reason or the other it is never wielded until Elendil gets hold of it.