Hello,
To be honest,HYF is one of my favourites.I like 'Open secrets','Time stand still' and 'Lock and key'.a lot.
I think 'the mission 'is probably one of the most 'Yes' sounding songs that Rush have done.
I think it has a different feel to some of their albums,but it very much 'complete' ie needs nothing added.
Regards Hammersmith2