Neogenic Nightmare Chapter 12: Ravages of Time - S2-E10
Revealing mistake: The shot of the Lizard whipping his tail at Silvermane and destroying a wall is recycled footage from the Lizard and Spider-Man's battle in the sewer from the first episode in the series.
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.