By the way Re. the wights, I never got the implication that they were being ressed / somehow produced by the white walkers. I mean, you see so few white walkers anyway, right. Till a bit ago I wasn't sure there was a distinction (a fair, if misguided, sentiment imo). Given how minor a role the undead have played in the series up until this point it isn't surprising that even reasonable people have misconceptions.

So to say that it was "heavily implied" that the wights were being brought up by the white walkers, well, can't say I agree. Maybe "marginally hinted at", heck the only scene I can think of that has that sort of implication is the opening scene of the show.