I think that its better if we don't have them in the new album, because then we will have more new songs!
if we think about it, the album only has 13 songs, maybe 3 of them will be interludes, and the songs we already know: GREEN, Days, Rule, Sparkle and NEXT LEVEL
that leave us with 5 tracks.... if Mirrorcle World and Life come as well, we will only have 3 songs :S
and also we will have only 2 new pvs... if we count MW in
so yea
but who knows! lets wait and see