Ok to be fair I'd 100% back a wild mouse in the tomb raider building because Exterminator at Kennywood is a cool ride. And while I don't personally love wild mice, it would be a great fit for that space and for the family audience the park likes to appeal to.
I could also see them adding one down near wind seeker if they decide to redo the end of coney mall with new flats and a refresh type of thing. Personally think the area could look nice but you know they'd have the fans (me included) complaining how they replaced Vortex with a wild mouse
Other alternative is the sky flyer plot could fit one but that entire area needs a bigger retheme/refresh that plopping in a clone wild mouse isn't going to fix
I doubt we see pass sales drop that much. In fact I think we see the exact opposite. While there may be some people choose not to renew, I don't think it'll be enough to really have an effect on attendance numbers.
I don't think doing things like bubble parties, dance parties, or a cornhole tournament comes down to KI being a pass heavy park. The cost of doing things like that would be very minimal. It's more along the lines of people high up at the park not really thinking outside the box and using the whole "ok, good enough" mindset.
I even think doing stuff listed above along with tie dyeing shirts and/or a sidewalk chalk drawing party in Camp Snoopy (where kids can draw on the CS concrete for fun) would be a cool idea for late May/June as kids start getting out of school for the summer.
I think there will also be an increasing number of people who buy a pass, but don't spend a dime in the park the whole season since the in-park experience has declined so badly. Shame they decided to give away the gate.