I think they should release BLACKOUT with new songs and a DVD. Radar is a good song to release a delux edition.
This album has won some awards and very good reviews. Furthermore, BLACKOUT is one of the best 2007 albums according to Rolling Stones magazine: http://www.rollingstone.com/news/story/17601851/the_top_50_albums_of_2007/print

BLACKOUT DELUXE EDITION with promotion and a little tour.