I think the world of Dolly Parton, but her next rock song will be her first.
there are lots of non-rock stars in the R&R HoF. From what I've read, the reason why popular rock acts like Styx don't get in is because the Hall wants people who have been influential moreso than commercially successful. That has changed a bit in recent years as bands like Journey and Def Leppard were enshrined. But most of the incredibly successful 80'-90's acts remain on the outside looking in even though their music remains popular today.
Beyond the ones I mentioned above, Reo Speedwagon and Motley Crue deserve enshrinement.
