I really want to commend the developers on keeping this game updated. I know it must be hard to keep coming up with new unique ideas that can be actually made and integrated into the current game.
Although I don't think this dlc will be for me, I know some players that have been asking for modular airports for a while. I normally love modular options such as provided by the Park Life DlC. But Park Life expanded a lot on the possibilities on what a park could be. Zoo, Theme Park, Nature Reserve... Industrial DLC introduced a large variety of factories, needing specific resources. I just don't see how a modular Airport could expand the possibilities of what an ingame Airport could be, but I hope to be proven wrong on that.
I just hope that this isn't the last DLC and we might get more expansions that introduce new themes to the city instead of just re-hauling existing mechanics. I know for a fact that some people that wanted modular airports were also suggesting Park Life-like modular Holiday Resorts and even Raceways.