They can still write cool music, but not when Weiland is involved. The new song is actually cool musically, just doesn't work with Chester. He's not terrible but I just can't buy it..doesn't sound right.
The album they did a few years back with Scott was just awful.. sounded like an uninspired wanna-be Dylan/Aerosmith tribute album . Army Of Anyone with Richard Patrick was really cool. I'd be happy if they gave that another go.
Getting back to the topic though; Dean's tone is and has always been great. I agree that the Dirty Shirley would suit his playing but I love his Demeter/VHT/AC30 rig.