virginblue - I think you might be taking an overly pessimistic stance here. LCY is not in the same situation as MME
By virtue of its location / passenger base, LCY will always be more exposed to the cyclical effects of the global economy, compared to (for example) LHR.
I can think of a lot of other destinations from LCY with better potential compared to Berne. Now that the major engineering work on the train line out of Euston is essentially complete, a route like MAN without feeder traffic will never be viable - think of MAN ending as trimming the dead wood in LCY's capacity and making space for other more economically useful routes.
Major cities with a large business base however will return to LCY when the economy picks up again.