The World Ends With You got a ton of praise from fans and critics when it came out ten years ago. I rarely play portable games, so I never gave it a chance, but I'm looking forward to trying it when it hits the Switch.
I'll surely pick up Hyrule Warriors too, as I'm a fan of physical collections that include all of the DLC.
I might give Dark Souls another look on the Switch. I picked it up last year on PS3 for $5, but I got stuck early in the game and gave up on it. Maybe I'll give it another chance, but I'll have to clear up my backlog and wait for a deal before I pick that one up. It is a really good game to get in the Switch library though, since it expands the number of mature/hardcore titles available on the system.