Berlin-East then...
Nope, not at all. Leipzig-Halle apt is situated to the South/South-West of Berlin. To the East, there are two airfields that were for years envisaged as Ryanair's own airports serving Berlin and Brandenburg, both with decent runways, both within 50-70 km from Berlin. Unfortunately, both (Eberswalde-Finow and Neuhardenberg) were denied certificates to operate aircraft up to 85 tonnes.