Agreed. He doesn't play much of a role in the second season except for comic relief, with his constant avoidance of Wendy, and being somewhat depressed because of Ashley coupling up with Anthony. He's pretty much irrelevant to the story at this point, with his only role being a DIK brother and Maya's brother. Otherwise, the only time you really have a heart-to-heart with him is on your couch in Episode 6 because of Ashley. And just because of him, we might've ruined a perfectly alright relationship between Ash and Big A, all because once we told Derek that Ashley said she wasn't mad anymore, he acted on impulse and immediately gave her a call because he was drunk. IMO, if it wasn't for the story progression and having to get rid of the alphas, I would've just told him when he was sober, because who the fuck tells important shit to a drunk person?
Derek as a character isn't exactly the best, but you have to agree that he has his moments. He fucked the granny, introduced us to Swyper (Nora and Nicole

), got us together with Maya (though he's regretting it now which is dumb. I mean, you're putting two 19-year olds of the opposite gender together in a room. The fuck was gonna happen?), farted on the guard and a few more moments which were pure gold. While I do dislike how loose-lipped he is, it's alright for me as long as we don't trust him with anything important, and just take him as a DIK brother we can have fun with. Solves everything.