I'd rather they take their time and make the box set into something epic...  Really, the most important thing is that they compile ALL the officially-released non-album tracks.  If they can't do that, here's how I think they should prioritize them:
 
1st priority:  Non-album Midnight Oil originals.  This would be the b-sides like Heaven And Earth, You May Not Be Released, etc.
 
2nd priority: Alternate versions of Midnight Oil album tracks.  This would include the shorter "single" versions of several songs, the remixes, the live b-sides etc.
 
3rd priority: Non-album covers of other artists.  There are a few of these as b-sides (live and studio) and on tribute albums.
 
What do you other Powdies think?  I know I'd rather have ALL of the first group above than an incomplete set from each category.  I'd put the Non-album Midnight Oil originals on one disk, the live b-sides on a second disk, the single versions (and alternate versions like Cemetery In My Mind <True Believers Blind version>) plus covers on the third disk, and the Remixes on a fourth disk.
 
Of couse, any unreleased songs would be in a new "ultimate priority" group, but I suspect we'd be lucky to get even one of those, so it could go into the compilation of non-album originals.
 
Anybody want to pass this on to Arlene?  ;-)