These keys are so much better than the BBS-DDD era! The only one that really stinks is the Hercules one, I mean, come on, that's just disgusting, but the rest are definitely middling to great! The Tangled blade is EXACTLY how I envisioned it in 2015. The tower makes for a perfect blade, and a burning sun is a much more elegant 'tooth' to the blade than, say, Punzie's hair or some lanterns, or a crown.
The Frozen blade is amazing, too! Simple, monochromatic, and yet with a very clear inspiration from the film. It's as simple as a KH1 Keyblade, but with a more unique silhouette. It's basically the sequel to KH1's Diamond Dust, but with a more robust blade.
The Pirate blade is a little unwieldy, but it fully makes up for it in the style department. We already know this one is the coolest. Nomura purposely made Follow The Wind from KH2 a little unassuming (I still liked it) because he KNEW he was going to follow it up with a perfect Black Pearl-inspired key.
The Toy Story, Monster's Inc, and Winnie the Pooh keys are pretty good though a little dorky, and the Big Hero 6, Shooting Star, and Hercules keys are not my cup of tea, really.