-(!!!SPOILERS!!!)- Jon Snow in the future... -(!!!SPOILERS!!!)-

It's a fascinating theory, and one which makes sense. If you were to read the books, the prophecy of "The Prince That was Promised" is one held in high regard amongst several noble families of Westeros, in particular the Targaryens. Essentially, it states that a legendary figure will come into the world, hailed by a red comet (potentially linked to the red comet present during the beginning episodes of season two), and that he will indeed be "born amidst smoke and salt). This prophecy bears striking resemblance to the prophecy of Azor Ahai, a prophecy held in incredibly high regard by the red priests of R'hllor. Essentially, it states that Azor Ahai (a prophet and champion sent by R'hllor during The Long Night) will be born "after a long summer, and when the cold breath of darkness falls on the world". If these two prophecy are indeed one of the same, then this raises a number of noteworthy points: 1 - It would explain Melisandre's fascination with Jon. The Prince That was Promised is highly speculated to be born of the Targaryen bloodline. If Jon is indeed the son of Rhaegar and Lyanna, then this would place him in good standing to be Azor Ahai, or the Prince. 2 - Night's Watch members are sworn to the Watch until death. If Jon were to die and be revived, one may certainly argue that he is therefore freed from his vows, however, Jon is a man of honor, and may thus think conversely. 3 - It would explain several of Melisandre's quotes in the novels (i.e. "I pray to r'hllor for a glimpse of Azor Ahai, and all I se is snow). If Jon really was Azor Ahai reborn, it would show that it is indeed foreshadowed, albeit very subtely. However, this also raises a number of questions. 1 - Melisandre and her use of fire would certainly provide the smoke necessary for the fulfillment of the prophecy, however, the salt is still absent. Unless one were to count salt used in the building of The Wall, this leaves it absent, and therefore voids the entire possibility of Jon being Azor Ahai 2 - The Princes coming is heralded by a red comet. To the knowledge of the viewer, the comet was absent at the time of Jon's birth. When the comet arrives in season two, nothing of major importance is happening to Jon. He is beyond the wall, yet he does not die, he does not partake in any rituals, and he does nothing of major importance to signify him as the Prince. If Jon truly were to be the Prince, there are a number of plot holes which would first need to be addressed in order to satisfy the stroyline thus far. There is another character however, who may be in better standing to fulfill this prophecy than Jon: Daenerys. Points of interest which place her in this position: 1 - The prophecy may be both literal and figurative in it's meaning. Daenerys was born on Dragonstone amid a great storm (hence granting her the name Daenerys Stormborn). This literal birth would satisfy the salt requirement of the prophecy. Figuratively, one may consider her "born again" after she rose from Kahl Drogo's funeral pyre with her dragons. The pyre would satisfy the smoke requirement of the prophecy, rendering both salt and smoke satisfied. 2 - Daenerys witnesses the comet seconds before she enters the pyre. Again, is the porphecy was figurative, then the comet would certainly herald her second birth. 3 - Daenerys is born of the Targeryen bloodline, hence satisfying that prerequisite. 4 - Maester Aemon Targeryen strongly believes Daenerys to be the prince. As a maester, he is incredibly knowledgeable in regards to the subject, and his views on the matter would be far mroe educated and grounded in reality than anyone else. However, a number of issues arise if Daenerys truly is the prince. 1 - Obviously, Daenerys is not a male, and therefore cannot be a prince. 2 - All the visions of Jon by Melisandre suggest otherwise, instead proclaiming Jon as the Prince. Some have previously suggested that both Jon and Dany are the prince/Azor Ahai, however, this cannot be true. For both characters to be a fulfillment of the prophecy, the prophecy of Azor Ahai and that of the Prince must be separate prophecies, one being fulfilled by Daenerys and one being fulfilled by Jon. However,this raises further questions such as which character is which fulfillment, and whether or not these fulfillment satisfy the prerequisites held. In spite of this however, I find your above theory quite interesting, and certainly plausible. Despite our varying viewpoints, I think it is clear that Jon has a future role to play in the series.