^Brace yourself for blasphemy, but I don't care for Jack Kirby's art. It's too clunky and angular for me.
I'd expect that designs based on Addams' cartoons would be the sort of thing they're going for, but I'm sure they'd be filtered through Tim Burton's own trademark style. I'd assume they're also planning to go for the sensibility and humor style of the original cartoons, but the Sonnenfeld movies already did that. The first Addams Family movie had dozens of gags and moments that were based directly on the cartoons, and the films definitely embraced the darker, more macabre sensibilities of the cartoons. While they did borrow elements from the sitcom (although claiming they didn't and refusing to give due credit to the sitcom's developer), they were much closer to the cartoons. So the claim that this Burton project is doing something new by going back to the cartoons is somewhat disingenuous.