Ryanair
I've no idea about the answer to those questions.
Ryanair has certainly wrung the changes since it opened the base in 2007.
Since then the following have all been tried at various times and for various periods but are not operating this summer or next winter:
Derry, Dinard, Grenoble, Salzburg, Scezecin, Shannon, Cagliari, Eindhoven, Pau, Perpignan, Montpellier, Toulon, Trieste, Bydgoszcz, Budapest, Bratislava, Rimini, Porto and Belfast City.
A lot of the routes were seasonal and some are now operated by other scheduled carriers (and charters in one or two cases).
On the face of it some of the axed routes did very well in terms of loads.
For example in summer 2009 from May to September Bratislava had monthly load factors respectively of 69%, 85%, 93%, 94% and 89% whilst Budapest's figures were 86%, 84%, 94%, 93% and 83%.
In the same period in summer 2010 Bratislava saw 88%, 88%, 92%, 94% and 88% and Budapest 91%, 93%, 93%, 93% and 87%.
These figures are based on all timetabled rotations operating.
Ryanair has also brought back routes it previously axed such as Gdansk and now Katowice.
This winter the emphasis is certainly on central Europe and winter sun destinations.