Sins of the Fathers Chapter 3: Attack of the Octobot - S3-E3
Continuity mistake: When Doc Ock is being taken away in handcuffs at the end of the episode, his mechanical arms are missing. The arms were fused to his spine, so the police couldn't have confiscated them.
Neogenic Nightmare Chapter 11: Tablet of Time - S2-E9
Continuity mistake: When Dr. Connors starts transforming into the Lizard after being blasted by the robot, the sleeve of his lab coat magically becomes tattered at the same time his hand transforms. Subsequent shots also alternate with his sleeve being tattered and pristine as well as his hand being reptilian and normal.
Continuity mistake: When Peter and Debra are approaching Dr. Connors' office, the nameplate on his door misspells his name as "DR. CURT CONNeRS". After they have entered the lab, the nameplate is shown to have the correct spelling. (00:06:10)
Neogenic Nightmare Chapter 4: The Mutant Agenda - S2-E4
Continuity mistake: When Professor X is explaining his line of work to Spider-Man, the neck portion of Gambit's headgear is flesh-colored. (00:04:35)
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.