Fingolfin made the top of the list in the recent HotA video about the most powerful elves. Here's another video talking about the life and times of the High King. It's 46 minutes long, so wait until you have a lot of time to watch it. It's well worth the time.
https://www.youtube.com/watch?v=YvCFAMHTmqo&list=WL&index=103
Or you could watch our video on him ;)
Yes, I've also watched your video. And yes, I would like to see a live-action version of the Silmarillion. No idea who would play Fingolfin, though.
Personally, I think that Feanor is the most mighty and most powerful. The definitions of both are: Might = The power, energy or intensity of which one is capable. Power = The ability or capacity to do something. I believe there is no elf which has the ability or energy like Feanor and that he could have done the same damage if not more to Morgoth.