IMO, the current WDW version of the ride is the best version that has ever existed. Here's why:
http://www.kennetti.fi/swscary_10.html
As for being a "trade up",I hope I'm wrong, but I'm very skeptical that the coaster will be able to retain all of the
STORYTELLING elements that are in the current ride, no matter how good the theming is. Big Thunder has great theming, but it moves too fast to be able to take in the elaborate type of storytelling scenes and diologue like you can get on a dark ride or boat ride. And even a "kiddie coaster" like Barnstormer moves too fast for this type of
storytelling. That's why I was hoping if the Snow White dark ride closed, they would go with the rumoured flume ride attraction like Splash Mountain that could even expand the
STORY even more!
Thanks for your info, though.