Feanor Self-Important?

[the phantom]

With regards to Feanor's quote, he meant that he would be the first of the eldar to be slain in Aman. Mandos' reply then refered to the fact that Finwe had already at that point been slain

Of course. I think about everyone here (I know I do) thinks this is the correct interpretation.

However, what we're trying to do is toss out the obvious and try something not so obvious- and see if we can somehow justify it. We're just having some fun.