Now while plans have certainly changed, something to add to the whole "There's no room for all the attractions".
If there's something I've learned in the theme park industry, is that "There's no room" is often false. You have to be incredibly specific on how there is no room for it to ring true, though still, that can be proven wrong as well!
Theme parks and manufacturers can get pretty creative in shoehorning what they want into parks, just look at boardwalk parks like Santa Cruz Beach Boardwalk, Morey's Piers, Blackpool Pleasure Beach, Gröna Lund etc. Time and time again one may think there's no room for new attractions, yet they find ways to put them in. Often times they're stacking rides on top of buildings/each other, or going underground.
Considering the plans for SNW is to be multi-level, I have no doubt they would've been able to squeeze in everything from the old plans since building up or down is a prime way to fit multiple attractions.