Originally Posted by mkgrip

Why would anybody, let a alone people who are willing to pay a fair price for a C-class ticket want to fly HEL-BMA-LCY-SNN-JFK, when they can just take AY5 and fly direct HEL-JFK?

And even in general the smaller "city airports" have no advantage when you're just connecting through, the whole point is that the airport is closer to the city, if you connect you don't care about that.
There's really no added value going through LCY or BMA only arriving or departing.