all the 'waiting/hoping/wishing' for a targ statements would have to be made by those who had something to expect of a positive nature by the discovery. would the brother on the island's lot really improve, more importantly would the lot of those he claims to care for improve, with any targ descendants discovery? were the general populace better off under a peaceful targ rule than a peaceful baratheon rule? and as for jons 'no matter how many swords they give me' remark, i think it refers to the many swords that made/make the iron throne, the they being whoever has the power to give them/seat him upon it. he will refuse the iron throne, just as he refused winterfell. arguably with greater ease, having never even (guiltily) dreamed of ruling westeros.