Not sure where you're getting Nintendo will be the "only major land in the park".
The clone thing is irrelevant.
1. Nintendo looks to be the only thing headlining the new park. People aren’t going to go to the new park for Dreamworks, FB, and Classic Monsters, they’ll go for Nintendo. Hogsmeade, in the other hand, had Jurassic Park next-door (bigger than anything FW will have at opening, other than Nintendo), and Marvel was picking up speed. The only exception I can see to this is if Universal moves JW to the new park, even though it obviously won’t be the headliner.
2. Really? Is it? People came from all over the world to see Hogsmeade for themselves, because they couldn’t see it anywhere else. SNW should already be in Japan and Hollywood by the time the new park opens.
3. Why not distinguish yourself from what everyone else is getting, and have some rides/areas that aren’t found anywhere else?
4. The more capacity this land has, the better. This thing should be 14 acres, minimum, with (at least) four/five major rides. To get back on topic somewhat, Zelda could easily fit that bill. It shouldn’t go into LC anymore, and I think Universal knows that. This won’t be Zelda, if I had to take my guess. It won’t be HTTYD, either. It’ll be something else.
Sorry if I come across as rude and went off-topic, but I needed to rant. You can’t expect SNW (as it currently stands) to carry an entire new theme park on its back. There needs to be more, whether that means an expanded SNW, Jurassic World/LOTR, or (preferably) both.