As a Cleveland area resident and self described expert on all things. Here's my piggyback report to the OP.
Skip the NFL and Rock Hall of fames. Both are overpriced for the experience and something you'll look back on as a disappointment.
Cedar Point Halloweekends starts that weekend. They open the park later in the day, tickets are cheaper, crowds/lines are lighter than normal. At night they make the park "haunted" with fog machines, roaming monsters and mutiple haunted houses to walk through.
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Here is a way to get all 3 for some savings: https://www.cedarpoint.com/?promocode=profootball Saves $12 a person
I quite liked the Rock and Roll Hall of fame. NFL Hall is definitely overpriced but I liked it.