"The idea for the episode was pitched by Omine, who based on a lawsuit at the time, wherein smokers sued tobacco companies for selling harmful wares." I think there's a word missing
Unitalicize Motherloving Sweets and Sugar Company, and add quotation marks
Make sure sentences with quotes end with citations (like "According to Omine, the list "never ended," and when the writers ..." etc)
"At one point in the episode, the Springfield residents try to set the record or largest human pyramid, which fails when the pyramid collapses, causing the people to roll into a giant ball." I think a word is missing
"Despite the risk of redundancy, "Sweets" actually works..." Should be 'Sweets'