I don't think Darrell cares much anymore frankly. I believe the producers offered him more money to remain on the show and be top billed with Brandi and Jarrod. It looks like one of the season plot's will be Darrell trying to teach Brandon...but we've already seen Brandon on his own a couple of times and been okay.
The series isn't the same at all, I agree. Just don't have that great cast dynamic or the history. Darrell and Rene genuinely do not like each other and have some kind of negative history, they've had twitter "wars" before too. Casey looks like she doesn't want to be there at all.
Barry'd Treasure was great! I hope the ratings are decent enough to give him a second season.