They are replacing an IP whos fans have high blood pressure and bad backs with an IP where its fans have high cholesterol and arthritis. My initial though was something like a Moana themed Hawaiian roller coaster ride but the target audience would have ran young. Too may crying kids because they couldn't ride.
My opinion, target IP audience should be 10-45. I don't have an answer. But like I said a few pages ago, it's a great ride so it doesn't really matter. Disney knows this and was able to shoehorn some Muppets in to appease their fans. But at the end of the day, it was absolutely time for Aerosmith to go. Even with all the other glaring issues in the park, this is money well spent even if I don't agree with the choice.