American Akira? I think I've seen that already. [http://www.youtube.com/watch?v=jafd97yJFOI]
Old YouTube vid, I know, but it addresses the kind of stuff that keeps happening in remakes, or what people are afraid is going to happen in remakes.
Also, it's not necessarily a bad thing to consult hardcore fans. Like any other sources of input, they are to be used wisely. Movies like the Lord Of the Rings trilogy wouldn't have turned out as well if Weta didn't consult the hardcore fans, or hire them as part of the crew. The Tolkien constructed language experts, the armorers, the artists, and so on are all very invested in the work for those films and the two-part The Hobbit still in production, and their expertise and enthusiasm greatly affect outcome of the final films.
Often, people stick "listening to fans" with "fan pandering" as part of the same "this is why hardcore fans don't help film adaptations" argument. Fan pandering often fills in the bits of bad film adaptations where the production team just wanted to get people to watch without actually doing the more difficult and time-consuming work of making sure the film was engaging on its own.
Case in point: I saw The Chronicles of Narnia: The Lion, the Witch and the Wardrobe with my family, but I was the only one who had not only read all of the Narnia books, but read them over and over again growing up. We all liked the movie for different reasons, but I was the only one to notice that the Professor's tobacco case on his desk was shaped like a silver apple [http://en.wikipedia.org/wiki/The_Magician%27s_Nephew]. No pandering, just a small sign that said, "Yes, we did our research." When the nods to the fans get bigger than that, the other audience members are left wondering, "Why is this important?", just like they were on the car ride home when I was asking if "anyoneelsenoticedthesilverappleandwasn'tthatAWESOME" to be met by only confused looks.
Another example: I also saw Captain America: The First Avenger. MovieBob and I both liked the film, but being the far bigger fan, he noticed more things [http://www.escapistmagazine.com/articles/view/columns/moviebob/9030-MovieBob-What-s-What-in-Captain-America] than I did.
Like MovieBob said, in the off, off chance that somebody in the movie business is actually looking at all this, I'd just like to say, "Yes, consult the fans, but don't consider their words sacrosanct. Make the movie good and reserve the hardcore fan stuff for garnish only."