Spider Wars, Chapter 1: I Really, Really Hate Clones - S5-E12
Continuity mistake: When the group of Spider-Men are observing the Green Goblin and the Kingpin's henchmen from inside the ventilation shaft, the outside edge of the shaft cover is first shown to be on the wall outside of the shaft, and then inside the shaft itself when the Armored Spider-Man pulls the cover off.
Spider Wars, Chapter 1: I Really, Really Hate Clones - S5-E12
Character mistake: When the group of Spider-Men are breaking into the Kingpin's building through the front door, Octo-Spidey uses a laser to cut a circle in the door and then proceeds to tear the door off its hinges with his robotic arms. Since he was just able to simply tear the door off, there was no need for him to cut the hole in the door in the first place. It's not like he needed to reach through the hole with one of the arms to unlock it from the other side.
Answer: Yes. Many things that would have been in the sixth season would have had Norman Osborne returning from limbo and reclaiming the title of the Green Goblin, Richard Fisk, the son of "The Kingpin" Wilson Fisk would return as a crime lord known as "The Rose", Ghost Rider would have appeared to help Spider-Man stop Dormammu from returning to Earth and Madame Web and Spider-Man would rescue Mary Jane from limbo.