I'm hopeful that the defense sucking is because these guys need time to gel/learn to play together, rather than because these guys are just shitty individual defenders. Last year, we knew that Tyus and Okafor were horrible individual defenders who were both getting 30 plus minutes.
Not sure we have anyone who defensively on an individual basis is as weak as those two. Jones, Jefferson and Plumlee should be plus defenders. Thornton looks to at least be average (blossoming into a big plus as he gains experience).
How bad could Allen, Kennard and Ingram be? I'm bad at eye testing defense but I thought Kennard has looked OK. Maybe Is Allen tired from shouldering the load offensively? I will just go ahead and assume Ingram sucks.