Where are all of our main characters at, physically and mentally/emotionally, when the Noldor hosts reach the Teleri? Some ideas:
Olwe: mourning the loss of his old peer, trying to father the rash and hurting Feanor. Adamant, however, that the ships are his, and will not give them up. Kills Irime, and is slain in turn by Fingolfin.
Feanor: rage and fury, obviously. Isn't in the mood for politicking or playing nice. He needs the ships. He'll ask. Once. Is less concerned with slaying Teleri than in securing the ships, though of course kills anyone who gets in his way of accomplishing that.
Maedros: driven by duty and loyalty to his father. Tries, perhaps, to mediate between Feanor and Olwe (perhaps promising to send a small contingent of the Noldor back with the ships after the main host has landed?). Ignored by the two kings. Afterwards fights at his father's side, but tries to act more defensively than offensively. "Has his father's back".
--the other seven sons: no real role in the events leading to the fight, seen fighting as passionately or unwillingly as their character determines.--
Irime: right behind Feanor, as gun-ho as he that they need the ships, and is willing to use force to take them. Blinders on, all she can see is revenge.
Fingolfin: a bit behind, will not see the start of the fight, but will see Irime fall. Afterwards, will engage fully and ruthlessly in the battle ("not wholly innocent"). Slays Olwe. Does he feel guilty afterwards, or is too pumped up on rage and adrenaline? How does he respond to Finarfin's counsels? Pride? Determination?
Fingon: is horrified. Engages the fight primarily to secure his aunt's body. Decides they've already sacrificed too much not to continue.
Turgon: assists his brother in securing Irime's body. Assigns true blame to Morgoth, and redetermines to continue.
Aredhel: does not engage, but does not seek to intervene to stop the fighting. The perspective of the non-combatants of the Hosts of the Noldor. (is she a warrior? She's a huntress, but that's not the same thing)
Finarfin: even further behind Fingolfin. Will see battle raging, but will prevent his people from engaging on either side, as he is convinced that will only make things worse, and fighting either side would make them slayers of kin -- he's the first, perhaps only, one to state it so explicitly. Physically holds back one of his sons who attempts to draw his sword (Aegnor?) Breaks his sword after the battle, counsels his brother to turn back, and buries Olwe and Irime on either side of the Great Arch of Living Rock, overlooking the sea towards Middle Earth. Last shot of him for a while will be him looking over the harbor from the arch, holding his face in his hands, weeping.
Finrod and Angrod: stay back with their father, watching in horror but unsure what can be done to stop the violence. Agree joining would only make it worse. Decide to continue, but only just. Influenced by the sons of Fingolfin?
Aegnor: wants to leap in to the Teleri's defense, rebuked by Finarfin.
Galadriel: frozen, disbelieving. Cannot commit either to the Noldor or Teleri side. Afterwards is furious with herself, but still cannot decide which side she's on. Curses and mourns both Olwe and Irime. Defies her father to continue because she seeks to prove herself.
Typing this out, I'm struck again by how big a cast we have. I was considering including Earwen in this, too, but I don't think we have time to differentiate her point of view from Olwe's or Finarfin's, so she might well be superfluous in this episode. She might have to have a cross conversation with Finarfin later, however, so he can justify his non-intervention to the Teleri. How much blame and repentance should we give the Teleri hosts?