Six Forgotten Warriors Chapter 5: The Price of Heroism - S5-E6
Continuity mistake: When Captain America and Red Skull are grappling near the vortex, their fingers are interlocked. When the shot changes, their hands are pushing against each other's torsos.
Six Forgotten Warriors Chapter 5: The Price of Heroism - S5-E6
Continuity mistake: When Captain America is giving Spider-Man moral support after Mary Jane's accident on the roof, the red glove on his right hand briefly turns blue when he puts his hand on Spider-Man's shoulder.
The Return of Hydro-Man: Part 1 - S5-E7
Continuity mistake: When Mary Jane is hiding from Hydro-Man behind the barrels, one shot shows her bare arm under her yellow sweater, when the sleeves of her purple turtleneck that she wears under the sweater should be visible.
The Return of Hydro-Man: Part 1 - S5-E7
Continuity mistake: When Spider-Man is in the lab analyzing Mary Jane's jacket for clues, the inside of the door to to the lab has the door knob on the right side. When Debra Whitman is trying to get in the lab, the door knob on the outside of the door is on the right side as well, when it should be on the left side. The inside knob also disappears when the security guards break the door down.
Secret Wars, Chapter 1: Arrival - S5-E9
Continuity mistake: Towards the end of the episode, Captain America stands up to pledge his support to Spider-Man. When the shot changes, Cap is suddenly sitting down. When the shot changes again, Cap is standing up.
Secret Wars, Chapter 3: Doom - S5-E11
Continuity mistake: After the Beyonder ends the war, he teleports everyone to a floating chess board in space, with Dr. Doom lying near the edge. When the shot changes, Doom has moved closer to the middle of the board. He is unconscious so he couldn't have moved.
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 2: Farewell Spider-Man - S5-E13
Continuity mistake: When Spider-Carnage has Gwen Stacy hostage, she is bound by portions of his symbiote. When Spider-Man frees her, she is suddenly bound by webbing instead of the symbiote.
Spider Wars, Chapter 2: Farewell Spider-Man - S5-E13
Continuity mistake: When Scarlet Spider is saying that they need to destroy the bomb, you can see one of the arms and tattered costume of the Man-Spider behind him, even though the Beyonder had already teleported Man-Spider to another dimension. It appears to be a shot from Spider-Man and Scarlet Spider's fight with Man-Spider that wasn't used and ended up being repurposed, rather than taking the time to animate a new shot altogether.
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.