I understand if Rumour Has It's sales aren't huge because so many people already own the track on the album, but this shouldn't affect the airplay position... People who already own the album, might want to hear it on the radio still and the people who don't own 21 might wanna discover Rumour Has It this way. Especially as Rumour Has It is definately better than Set Fire To The Rain
No re-release for 21 please. I bought 21 during last year's Easter and if they did a re-release, it gives me and other people the message "Don't buy an album 2 years or less after the release, labels wanna put out some more versions and if you're clever, you wait til everything's done and pick the one which includes it all". Well, that would actually prevent too frontloaded sales and would speak for longevity
But I guess many people would be fed up, too, and would stop buying albums because they don't wanna be kidded no more.
Deluxe editions for fans which are directly released along with the standard edition and EPs are OK though...