Revenge had a great first season. It should have been a mini, or one season only imo.
Just like Wayward Pines : I loved season 1. It was a fun mystery/fantastic ride. But season 2 was so bad. And the show got canceled.
Now, when I enjoy a first season of a show, I am so afraid that the following seasons will be crap... That I am always relieved when season 2 is good, or even better (like Servant)
For some show I love very much, I don't even want a season 2. For exemple I really don't want a new season for WandaVision or for Watchmen. Thank God Damon Lindelof and Warner don't want an other season, even if the first was was a success. If there is no more to tell, then tell no more.