I think for any Halloween thrills in the Branson parks, you're going to have to look to CC. This year they will debut their answer to the Halloween festivities at other parks, and it sounds pretty nice, however child-oriented it may be. Free candy, hay rides, and games are all the things that are missing at normal park gorefests, but CC has them in full force.
Maybe in the next few seasons, they expand the festival and add some haunts. I'd really like to see what the Herschends can do with that, I'm sure it would be a lot funner and more interesting than seeing a bunch of fake guts be thrown everywhere.