An interesting point is that it's the first chapter where there is any substantial dialog between the Elves. Previously, all we've really had was a few quotes from Finwe and Miriel, and a good chunk of Aule/Yavanna/Manwe dialog. Here we begin to move from the more detached "history book" style into something approaching normal storytelling.
The hint of "some shadow of foreknowledge" attributed to Feanor is interesting. We now know that something bad is just around the corner.
Fingolfin's forgiving nature ("I will release my brother") is also of interest to me, as - even though it's more explicit in a later chapter - it sets the stage for what's going to happen shortly.