What destroyed Legend for me was how the zombies were superhuman. Look... zombies are just humans. They cannot jump higher or run faster than non-zombie humans.
When the film makers change the rules of physics and human ability, it makes it much harder to suspend my disbelief and enjoy the movie.
Seeing how the hoards of zombies move in WWZ, it reminds me of the "rush" parts of Left 4 Dead. That's all fine and great for a video game, as I'm not expecting any kind of reality there. A video game very quickly defines its universe and the rules within it.
Movies set in real life don't get to play that game. Humans are still about 150-200 pounds. They still have bone structures that will break under normal stresses. I don't accept that they can violently make a human tower to overcome a huge wall, like ants make an ant bridge over gaps and water.
Yes, I've seen the human tower competitions, but those are VERY carefully constructed and often fail catastrophically after about 6 levels.
I have the 1980 original of "Maniac"...if you are going to remake a slasher, there would have been stronger choices.....perhaps the hulking beast main character in "Don't Answer The Phone" or the utterly over the top "Pieces"
I'm a devoted gore horror/exploitation/slasher fan, and other than a whole lot of a retro stylish Floria Sigismondi style editing/cinematography, that film is a rather pointless entry to the canon.
The lead actress went through one hell of an endurance test, for what basically amounts to some "shock value" art house meandering.
At least "A Serbian Film" attempted (and failed) at some sort of political context statement, "Salò/the 120 Days of Sodom" actually did achieve a bit of one regarding fascism and "Cannibal Holocaust" made an attempt at decrying the tactics used by mondo filmmakers (most notably Franco Prosperi and Gualtiero Jacopetti).
The depth of the metaphor isn't great in any of them, and may be an attempt at giving accusations of "torture porn" plausible deniability, but at least some tiny bit of effort was made to work on a non gorehound level.
"It's fucking REAL" is often the last ditch attempt of folks who can't make a film interesting for much of any other reason.
Problem with WWZ... in the book, the zombies DO NOT RUN. They aren't fast. Period. In order to make things "exciting" for idiot moviegoers, they amped them up. There is no reason for that, IMO. The book did just fine. Slower zombies that are simply incessant DO build suspense. Sigh...