I never delve into this episode enough even though I should. Two words: character development. We get an episode where Mr. Krabs learns that the life of greed he was leading was literally costing him his life. I've got to give the SB crew credit, they almost kill off a SB character (even if it was just for a few moments). We got to see SpongeBob's and Squidward's reactions to him dying as well. Even at the end of the episode when you think Mr. Krabs is all greedy, he again learns the error of his way. Even though Eugene probably didn't improve at all, it was a great episode.
For negatives I'd probably say how negative Squidward was about Krabs' death. Even though I do realize it's a comedy cartoon show, it was still unneeded Squiddy. :P Like The Great Snail Race where SB pushes Gary too far, Mr. Krabs did the same with SpongeBob. But in both cases they do apologize to the one they did wrong to. That's probably one of the main reasons people dislike other episodes where one character abuses the other. It's because they don't apologize (New Pal for Gary, even through I am kinda tired of people constantly referencing the episode.)