I guess you would have to create an alternate route since it's right near the entrance of Universal Studios since to me, the soundstages are just right across the road and you would have to find a way around that the road unless it was annexed as part of the SNW expansion. Universal entrance near the Jurassic World ride would have to bee altered a bit so workers and actors/actresses and movie crew would go to work.
Also, since it is indeed called Super Nintendo World for a reason, other non-Mario related Nintendo games might be used instead as you mentioned the DK area. People would moan about the SNW being exclusively to Mario and his friends and not others such as Splatoon, Legend of Zelda, Star Fox, and Pokemon. If the DK area is really planned, I have no problem with that, just that Universal should expect a bunch of Nintendo fans complaning why non-Mario Nintendo properties aren't being used in the area especially in regarding future developments. That might give Universal Hollywood into considerations and have their plans altered.