Okay that sounds nice but what does Varys know about the Starks at this current point? What does he know about Jon? Does anyone outside the North know yet of what happened at Winterfell? For all everyone else knows by the time Varys gets back to Meereen, the North is run by the Boltons (who served the Lannisters) and Sansa is at most a trophy queen having been passed around from the Baratheons to the Lannisters to said Boltons, right? I get that he has the greatest network of information in the world, but did/can word really travel that fast in that society? Keep in mind how far Winterfell really is from Dorne (although the writers really have been messing with time jumps lately with Arya and Varys just teleporting between episodes so who knows)
Basically, what point does Varys have in talking about how the late Stark patriarch spoke against killing Danny, when the Stark family is insignificant and all but extinct to them? At this stage of the Game, the Starks are an afterthought; a bishop sitting on the side, off the board.