Dollywood is essentially a well themed European park that's in the US. There are bits of theming between the individual rides that make it all blend together. They also do well in making it all look good in the sense that its not easy seeing behind the scenes areas. The park also has tons of trees mostly everywhere which helps with the setting. This is part of a laundry list of reasons why Dollywood is my favorite park (even over the likes of the Disney parks I've been to, CP, HW, HP, KI, and Carowinds).
Also, I don't get the argument with the new coaster that it doesn't have much else to look at. How many other Dollywood coasters do? Thunderhead, Eagle, Tennessee Tornado, Lightning Rod- outside the queue and stations on those are all just tree clearings that happen to be on hills. I'm sure the entry plaze, the queue and station on the new ride will be at Dollywood's standards.
I also think with the way Dollywood has expanded, if you look at the train route, I believe the goal is to expand the park to the other loop and create a second station, so stuff around the new coaster may be filled in for the future. Mystery Mine used to literally sit all by itself before other things got added. Dollywood plans ahead very well, as evidenced IMO by the way they made the park a full loop in the first place (Thunderhead Gap and Tennessee Tornado used to be dead ends). I trust in whatever avenue they go with.
EDIT: I also want to add this since people often midjudge what the park is because its named after Dolly Parton. Speaking as a music history buff, she has one of the greatest stories among any musician ever and she's one of the few country music artists I'll gladly listen to (and she has some serious music award hardware to boot, heck she's the type of person to initially decline a R&RHOF nomination). Her story is very well woven into the park. She's also done a ton for the surrounding area including helping out financially with the fire damage.