Cologne has a few attractions, but could they be aiming mainly at VFR? There must be 6m within the Rhine-Ruhr connurbation, and at least half that number within a 2 hour drive of CVT. Still don't know if HLX have enough marketing power to compete against Easy from EMA on this route?
Or are there some more cunning politics involved? Shove 2 fingers up to Warwick District Council and show enough confidence in the interim terminal that more than one airline is using it? Divert some of the bad press away from Thomsonfly, now they aren't the only airline operating the route? Some of those bleating nimbys still seem to think they can stop these flights from happening.