Just food for thought ... Mickey's Not So Scary Halloween Party 2020 prices (yes I know 2020 got cancelled, but when Disney sold the tickets they didn't know that) started at $86 per person for a weekday in August/September. That was a $6.00 increase over the 2019 prices.
For 2021, Boo Bash, which offers less than
MNSSHP is priced at $129 per person for August / September nights.
That is a 50% increase in price for less than what you would have gotten in 2020 (if not for the pandemic) - 60% more than the last time they ran it. They are charging more and you're getting less - both in hours, and in what entertainment they will be offering.
Just trying to put things into perspective here, Disney believes they can charge 50% more for an event that offer less and get away with it (and I can almost guarantee those parties will sell out on a lot of nights) - there's a good chance they also believe they can charge to use the FastPass lane (or whatever they're going to call it).
People are willing to spend $129 or more (October is $159, Halloween night is $199!) for just 5 hours in the park (7pm-12am) and they will have shorter lines for just 3 of those hours (9pm - 12am).
If Disney does launch a Lightning Pass that allows you to at least ride every ride once with close to no wait - how much would they charge? I have got to imagine it will be a lot.