Where are you getting that it's a "kiddie" coaster? Pteranadon Flyers is a kiddie coaster in that it has a height maximum. Hippogriff is a kiddie coaster in that it's got cramped seats and the enjoyment of the ride comes from the tame thrills rather than theming. NOTHING anyone has said about this new JP ride has suggested any of these things. Just because it has a (rumored) top speed of 20-something miles per hour doesn't make it a kiddie coaster anymore than Space Mountain is a kiddie coaster for only going 28 mph.
It's supposed to be well-themed, which is something I think everyone can enjoy. The rumored manufacturers of the ride aren't known for building exclusively "kiddie" models. And in the end, it's another attraction, and one that isn't supposed to be super intense. That can only be a win, right?
Usually I hate when people say "stop complaining until it's opened" because the whole point of discussion boards is to discuss. But this thread particularly has kind of jumped the shark. People are getting upset over made-up things. Nothing has suggested this addition will be strictly kids-only or have any cheesy carnival-like aspects to it. Even better, everything has pointed to a nice little addition that gives kids extra stuff to do at the park...and that's what we've all kinda been shooting for, right?