Guys, I'm pretty sure a BLANK spot means that it EITHER hasn't been done yet, or there might NOT be anything there.
The BLANKs for GUESTS are there just IN CASE they want guests to appear on the track, not that they WILL. We're assuming too much with this chart, that is, just because it is blank doesn't mean it WILL have a tick. It COULD have a cross in it (eventually).
Honestly, we won't know unless we A) get a look at the completed chart or B) wait until the album details are revealed.
Also, interesting that "Easter Egg" MIGHT only have lead guitar and keys in it. Shades of LTE maybe?
-Marc.