Just for the sake of rumination, I'll argue that Feanor does not represent the Noldor in an archetypical way. I certainly don't think that he represents all the Elves, but for simplification I'll confine my discussion to the Noldor.
I think Feanor may represent all the flaws and misused potential of the Noldor. He was a creative genius, a commanding leader, and generally one of the all round greatest of the Elves. However, most of the willful (and by that I mean the results of actions which he intended) acts of his life led to destruction and death. He let his abilities go to his head and ultimately his strengths became his weaknesses. I agree that this qualifies him as
a archetypical figure, but I don't believe that he is representative of everything that the Noldor did.
Take Finrod for example. He was a close relative of Feanor, he was a king, and he too was one of the greater (but not greatest) of the Elves, and his behavior stands in stark contrast to much of what Feanor did.
Finrod worked for the betterment of his people. Feanor abandoned about 2/3 of his people out in the middle of nowhere, and then at the point of death commanded his remaining followers to fight on in a war that he knew they could not win.
Feanor was proud beyond the point of megalomania. Finrod humbled himself to the point of being willing to abdicate his throne, and then ultimately die for the sake of a mere mortal. It is hard to imagine Feanor doing anything even remotely similar to that.
While this is hardly an in depth treatment of the issue, I think that it does begin to show that there was a whole range of action by the Noldor that is not represented by Feanor.
There are likely many counter-arguments to be made here, and there are probably tons more material to discuss, but this is a starting point.
Who wants to take a stab at it?
