I would imagine as in every other way-hyped, emotionally connected, much publicized and anticipated flip:
1. Binge listening/sampling for the first six weeks in all demos except 18-24s. (Til Labor Day)
2. More promotion (constant, in fact) in Sept. leading to the start of the Fall book (accent 25-54, 35-49, Males)
3. Fall book begins - concentration on 35-49 Males/Females dance, upbeat, "good time" feel
4. Promotion leading to holidays in November, female oriented, concentration 25-49
5. Heavy holiday promotion, females, 25-49+ more "nostalgic" Autumn/Winter "feel". More "gold" based.
6. More emphasis on "Classic" NY hits for 35-49 demos at Christmas
Result: Youth will turn off the station in 2 weeks after the hype. The boards will come alive with how "bad" the station sounds. Some in the 35-49 demos will note that they "miss" the "legendary" jocks, but find the station listenable and heavy cumes with PPM. The 25-34s will find the station "fresher" but not "contemporary" ... but an ok listen, but with heavier cumes out of sampling and promotions.
The 35-49 cells will take the day because of cumes, incidental listening and rebounding TSL's with a broader playlist. Strong females and stronger programmed weekends will put the station in the Top 15 overall in six months. Don't be fooled by 12+ figures, they have NO impact. Rolling average trends may show a 4 share in 25-49 demos by November, then plateau and even drop to a 3+ share by Christmas.
Top 10 next spring 25-54. Top 15 25-49. A 9-11 month turnaround from present levels, with a 3.5 share across the board by next April, a 3.2 by June.
Just a hunch. My psychic was exhausted and her crystal ball exploded. Said that a lot depends on the "energy" of the station after the first sampling period and as school starts. Without the energy going into the fall, it'll be a very slow climb after the newness wears off. Recapturing, however, the energy will bring good results. Billings will rapidly climb in the 3rd and 4th quarters.
#1? Probably...not. Top 5? Yes. Must be energy plus, no slacking and please don't play the Righteous Bros. three times a day, everyday like K-Earth in LA. It won't sound like K-Earth, either. More urban and carefully selected 80s material. VERY selective.