i can't remember the titles of the ballads from past albums by heart, so yea, what you've listed is what i like too! i think Hero is like a "Love Rainbow" type of song. upbeat but not really, lol. i can't explain it
but yea, arashi does do better with ballads as album tracks.
after the whole BNMF dilemma, i think i'm always worried of when a package will come, so thankfully Love Rainbow came pretty fast, lol!