The new "coaster" being built to replace Dragon Challenge is not the same as what it is replacing. It is more like The Mummy and Gringotts, a high speed ride with show scenes.
Yes the new Jurassic Coaster will be thrilling, but thrill rides draw people to the park and its good to offer a range of attractions, IoA had three high thrill rollercoasters (Hulk, Fire & Ice), currently it has one (Hulk) and Jurassic will make two. The new Potter Forbidden Forest coaster will be thrilling, but narrative focused, more like Gringotts and The Mummy.
Hopefully they get the sightlines right, but the skyline of IoA has always featured coasters, they literally use the outline of them in marketing images.
Also don't forget Disney are currently adding two more coasters (Tron and Guardians) and I'm not expecting them to have any on-ride animatronics yet the Forbidden Forest coaster is expected to feature animatronics.