Who's most at fault for the mostly lukewarm response that "Spider-Man 3" received:
*Sam Raimi - As the director, you're pretty much overseeing what goes on screen. Raimi and his brother also played a role in writing the screenplay. He also allowed the movie to be bogged down in cheese even though the the subject matter (i.e. the symbiote) was initally preceived to be darker. It was also pretty much Raimi's idea to make Sandman the real killer of Uncle Ben. Raimi also hated Venom (even before Avi Arad suggested it to him), due to him being stuck in his Silver Age mentality.
*Avi Arad - Practically forced Raimi to include Venom even though the script was already (by this point) finished, due to emails from fanboys asking about when Venom would appear in the series.
*Laura Ziskin - I know for sure that she wanted Gwen Stacy in the movie (to create conflict in a ready complicated Peter-Mary Jane/Peter-Mary Jane-Harry romanatic angle) even though it was already pretty crowded in the main character area. Sam Raimi also didn't initially plan on having Gwen in the movie, but was forced to do so by overzealous studio execs and/or fanboys.
*Fanboys - If it weren't for them, then Sam Raimi in all likelyhood wouldn't have been persuaded to include Venom in the first place. Raimi originally wanted the Vulture to be the second (or third if you count Harry Osborn) villain besides the Sandman.
*The actors - There (at least from my point of view) was sort of this vibe going on that the cast (namely, Tobey Maguire, Kirsten Dunst, and James Franco) were growing weary of playing the same characters for a third time (and were mearly sleepwalking/going through the motions).
*Sam Raimi - As the director, you're pretty much overseeing what goes on screen. Raimi and his brother also played a role in writing the screenplay. He also allowed the movie to be bogged down in cheese even though the the subject matter (i.e. the symbiote) was initally preceived to be darker. It was also pretty much Raimi's idea to make Sandman the real killer of Uncle Ben. Raimi also hated Venom (even before Avi Arad suggested it to him), due to him being stuck in his Silver Age mentality.
*Avi Arad - Practically forced Raimi to include Venom even though the script was already (by this point) finished, due to emails from fanboys asking about when Venom would appear in the series.
*Laura Ziskin - I know for sure that she wanted Gwen Stacy in the movie (to create conflict in a ready complicated Peter-Mary Jane/Peter-Mary Jane-Harry romanatic angle) even though it was already pretty crowded in the main character area. Sam Raimi also didn't initially plan on having Gwen in the movie, but was forced to do so by overzealous studio execs and/or fanboys.
*Fanboys - If it weren't for them, then Sam Raimi in all likelyhood wouldn't have been persuaded to include Venom in the first place. Raimi originally wanted the Vulture to be the second (or third if you count Harry Osborn) villain besides the Sandman.
*The actors - There (at least from my point of view) was sort of this vibe going on that the cast (namely, Tobey Maguire, Kirsten Dunst, and James Franco) were growing weary of playing the same characters for a third time (and were mearly sleepwalking/going through the motions).