OP,
Don't think EZY will be going too left field, at least to begin with.
From a business travel perspective STR would be nice, but the A320 is far too large, and of all the German cities it is, rather like Birmingham well down the list of places for a city break. Berlin ought to work 2/3 times weekly, as might HAM. CPH must be on the wishlist but could just replace SAS. Apart from them it will probably be familiar destinations around Spain, Italy, Greece and Turkey for 2024.