Maybe, but I'm not going to get my hopes up and risk being let down, until more is known! Besides, I'm more into story than technology. The Pinocchio, Alice, and Toad atractions are known, charming commodities whose story and characters I love, so I would JUMP at the chance to get those in their supposedly low-tech versions. Since I already know I LOVE them!
By contrast, if the "Mystery Attraction" was high-tech but about the villains, this would be a huge disapointment to me, because I do not like the villains.
Of course, it probably won't be about the villains, but I am just giving an example to illustrate that I care about story, charm, cuteness, and characters more then technology. If I'm into the story, characters, cuteness, and songs of an attraction, then I will LOVE it to death, regardless of if there are more technologically advanced attractions on property, and regardless of if other fans make fun of it (like Figment, Nemo, and Gran Fiesta are all faves of mine because they have the elements I like)
If the rumors of Snow White's Adventures closing are true, the only way the "mystery attraction" will redeem this decision, IMO, is if it is a new version of the Snow White ride we'd be losing, that tells the story of the movie as good as (or better than) the current version!
If Snow White stays, of course, then I'll be happy with whatever the "mystery attraction" is, but my preferences are (in order) Pinocchio, Alice, and Toad!