So it's going to be an Intamin "family coaster" according to one of the labels photographed by Dan.
The reaction so far has been disappointment. I don't see why it can't be a great ride just because it's aimed at family, rather than adrenaline junkies. I'm an adrenaline junkie, but I think a well themed tame(ish) ride could be as good.
Just to come up with a few great family rides: Simpsons (motion sim at Universal), The Mummy (dark coaster at Universal), Hex (yes, I think the theming, when it's all working well, makes an average ride punch well above its weight), Tower of Terror (Disney Hollywood Studios)...
The general theme there is imersive theming (except the Simpsons ride which is just an excellent motion sim with average theme). The experience has to begin in the queue, and the dark section needs to be great, but this could still be an excellent ride.