We as a nation have come to an understanding over the last four seasons of The Walking Dead, and it is this: If Daryl Dies, We Riot. This is not in dispute.
If Robert Kirkman or AMC decides to rid The Walking Dead of its most popular character, the 28 million of us who watch The Walking Dead each week will remove ourselves from our couches, pick up our pitchforks, and make our way to Georgia, where we will riot until such time as AMC and the powers that be figure out a believable way to permanently resurrect Daryl Dixon without straining credulity or turning him into a zombie.
This is the unilateral contract we have made with AMC. AMC agrees not to kill off Daryl Dixon, and we agree to continue watching the series. Killing off Daryl would, in fact, represent a breach of that contract. We can only be made whole again by either specific performance, or a riot on the set of The Walking Dead or approximate property therein.