Agreed. I don't think that Croco is as evil as DD... But that doesn't change the fact that he's ranked higher than DD in my book because of the mystery surrounding his past. It gave birth to many interesting theories, and I'm sure you read most of them ^^
Croco would be a very interesting nakama but I can't imagine him getting along with the rest of the crew with that personality of his.
I guess that Oda didn't give details about Croco's past because he will use him in the future again xD
It's just one of those wacky theories about future nakamas, one that I would really like to see happen although it's pretty unlikely. It's hard to see how he can get along with Robin specifically,but also the rest of the SHs because of what he did to Vivi. But then again Robin was also part of Baroque works , and yet she gets along now pretty well with the crew.
Crocodile is the cold blooded type of villain,while DD is insane or just a sadist.I think I like the former more, I'm just tired of crazy and cruel characters like DD or even Jack.
Of course, there's quite a few theories about him but I don't like most of them. The one I like the most is that he could be WB's real son.
Yeah it feels that way, I bet the SHs will run into him at some point, since he's supposed to be in NW. But I doubt he'll be an antagonist again. If he doesn't become nakama then he can at least be an ally, and help the SHs. He already helped Luffy back in Marineford, so I can see him continuing to do so. The kind of development I see for him is maybe getting his own crew, or joining another one even if it's not the SHs. But it's hard to see which one, I just hope it's not a Yonko's, unless it's the WB pirates. For some reason I'd really like him to be one of them, I get the impression he had quite a bit of admiration for WB, and that shows when he said that he wasn't defeated by someone so weak to WB back in the war. So he at least respected WB for his strength, that much is clear to me.