Do you think one of the reasons why we don't see Fili again after he's dead is also because they didn't want to put a damper on the shock of his passing? It's just the one thing that annoys me more than anything along with seperating Kili from his family to die with the bloody elves. That he's ignored like that. It's just so cruel and all the more heartwrenching to see the film makers give mouring time to Kili and Thorin, but not Fili.
tbh I think the real reason isn’t something beautiful, and I don’t think it was for the benefit of the viewers. I genuinely believe his time was cut because
- he’s not the “hot” one(which I would like to see a study on this because I don’t agree with it)
- to make more screen time for Kiliel
- which in turn made Bagginshield more canon buT AT WHAT COST
all we can do is hope that we get more screen time for him in the EE and something a little more than just this zoomed in image of him dead