Krabs is actually looking pretty solid!
I like the animations and references, particularly to the episode "Sailor Mouth" as well as the World's Smallest Violin. I like that they included both the sound he makes when he walks, but also the dolphin squeak when he swears; that's the main thing I wanted to see out of that move.
It also looks like Krabs has a money mechanic; I wonder how that's gonna work. Makes a lot of sense for his character, at least.
Finally, I love that his Final Smash is him feeding the opponent to the giant clam from "Clams"; that's amazing!
So yeah, Krabs might not be one of my favorite characters from SpongeBob, but I do like what they're doing with him in NASB2.