Maybe change the title of your thread to

"big fat pop, country pop ballad, super pop "big hit radio vibe" bass sound" since it's very specific. I bet the guys over at Lynn Fustons forum would have a lot of experience with this kind of thing since he knows a lot of Nashville cats.

Is this genre that you are working on new to you, if not what have players in the past that you've been in the room with done that was unique to them (gear or playing)? I wouldn't be surprised if those guys were using active pickups (at least as part of the equation).