I feel that "In a Little While," "Wild Honey" and/or "Kite" would all be solid singles. After all, U2 did say that ATYCLB was an album full of singles, and indeed, all of these three songs, like the four songs that preceded them, would be wonderful singles.
However, I have my doubts now about a fifth single because of the release of "7." It seems to me that if there were a fifth single coming - especially one with new b-sides and/or remixes - that U2 would wait until that single was out before releasing "7" (perhaps calling it "8" or "9"
).
On the chance that a fifth single is released, because of "7" I now doubt that we'll see new b-sides or remixes. Most likely, the b-sides will just be some live songs. Alternatively, perhaps this will be a radio only single around the world.
I guess if ATYCLB jumps up the charts due to the Super Bowl and Grammy wins, then maybe U2 will try to keep the album going a bit longer with a new single. However, if the sales bump from the Super Bowl or any potential Grammy win is minimal, then U2 or their label may decide that they have "milked" ATYCLB for all that it's worth and that it's time for it to slowly fall from the charts.
Regardless, whatever U2 decide, it's more than fine by me. If it's a radio-only single, at least I get to hear more U2 on the radio. If it's a new CD single, I potentially get some new b-sides or remixes. If there is no new single, I'm still happy because ATYCLB performed far better than I hoped.