Heeee.
Thingol somehow successfully manages not to send the timeline into a death spiral. They get confirmation that the Noldor (primarily Maedhros) are indeed arranging diplomatic overtures to assorted nations and groups, trying to build an alliance against Morgoth, citing specifically the victory of Luthien, Beren, weapons of dwarf-make, and Finrod (listed in that order of importance), spun as a herald of a new age, a new chance for all their peoples to work together.
Finrod comes to their wedding, negotiating to bring Aredhel and Celegorm and Huan (the last of whom accompanied their Quest, of course, and Celegorm and Aredhel are among those Beren befriended in Nargothrond - two past Melkors, she whispered to Luthien at one point, the two right before Scarlet-Huan - "Aredhel's usually dead by now, but if I stick Shmi in her role, she'll murder her husband rather than be murdered by him, then storm out of Gondolin, and apparently that's enough for the timeline... Celegorm's always an ass, sadly, but Karin as her gives me an ass who really likes me") - and Finrod makes overtures on behalf of the Noldor to Thingol (Aredhel and Celegorm stand there and look pretty; Finrod is clearly steering very aggressively to never have either say anything important to anyone important). The King's hesitant, of course, but, well, Finrod doesn't seem to be turning his charm off anytime soon, and Aredhel and Celegorm are very quickly sent off to join the much less easily offended guards in showing off the strength of their arms against orcs.
And a bit over a year after their marriage is finalized, they get rumors that a new sickness is emerging, circulating in the scattered households of the Men of the North.
Beren wants to do something, of course, but - it's hard to know what. This disease is... Difficult to really influence.