David' series was very good. , because,it was well written, it gave Supergirl an asertive personality and clear objetives and a cast of characters you care about. There was drama, intrigue, action. Not everyone cup of tea, I admit, but it was a huge improvement about how was the character was being treated before. Or after, if you see the first post-crisis years of Kara Zor-El.
Now, I have no idea what King is going to do or which surprise is going to be, but possible a easter eeg or some minor reference? It would not change the fact that series was a excellent era and at least me, enjoyed reading it.