agreed.
him being son from lyanna and rhaegar means he has targaryen blood(which is basically what azor ahai needs to be in order to qualify) and lyanna is ice,rhaegar is fire...so his is the song of ice and fire
-he also had that dream where he holds a flaming sword which could be a symbol for lightbringer
-if melissandre ressurects him he will be azor ahai reborn
-there was smoke coming from his wounds
-bowen marsh cried those SALTY tears
-blood pattern is described as looking like a star(bleeding star)
all in all a lot of hints indicate he just might be it,as the elements of the prophecy include rebirth,smoke,salt,bleeding star,flaming sword etc.
the only problem is that daenerys matches to all that as well
but i still have a feeling it`s jon....the prince that was promised,his is the song of ice and fire....it all seems as it was meant to be that ice and fire joined in order to bring about the promised prince(R+L)