Oh please, I'm a casual Prog fan at best. I'm more of a Metal fan, and even then, I still listen to pop and stuff, so give me a LITTLE credit.
But yeah, I guess in my mind, I kind of did omit those three little extremes of the album.
I mean, FAS is this big, crazy epic intro, so I still think most people would 'get it' as far as taking it as an introduction to the actual album.
As for Engima Machine... Yeah, maybe my point of view is a little skewed by the likes of TDOE, that it doesn't seem that crazy to me.
As for IT, well, even Octavarium had its title track. Besides, I wouldn't be surprised if the average user, listening to IT, would assume that the orchestral section is the beginning of a whole new song.
But mainly I just had the 'average' songs in mind, TEI, TLG, TBP, BTV, STR and AFTR. I feel like those songs are accessible enough for the average user to enjoy. Their personal tastes obviously do matter, but there's nothing too crazy there to scare them off.