I liked him infinitely more when he was just a gang leader (though he may or may not have had a gang at any given time) who was a little unhinged and had a badass skin mutation, sharp teeth and claws. Basically, the version of Killer Croc you see in the picture above.
Nowadays he's
literally a f**king monster who eats people and isn't remotely human. It's transformed from "oh, it's just a rare skin condition/hardening" into "he's actually slowly mutating into a crocodile," or some nonsense like, last I heard.
For as much crap as he gets, when Jeph Loeb made Waylon into the version of Croc we've had since
Hush, he at least had one of the characters in the story (was it Riddler?) say that Jones would be easily cured, so it was never intended to be a permanent change for him. But I think that later writers simply thought that his design from that story was too "badass" or whatever, and decided to keep it. Personally, I can't friggin' stand it.
And I actually laughed out loud when I first saw his ridiculous design (mainly his size and the look of his face) from the first
Arkham Asylum game.