I loved the finale, but I can understand a lot of the concerns raised. I think what is most worrying about the white walkers is that they don't seem to speak, they are just some undead force of nature. The dragons have a master who has to still play by some sort of rules... Dany still is interested in "the game." The white walkers seem to be very one dimensional, and that's what makes it feel so much like LoTR. I mean, what the hell does an orc want? At least human armies want to rape and pillage and gain honor and prestige. The motivation for orcs/white walkers seems pretty thin and therefore just feels less "real." Of course "real" is a bit of a strange measurement for something in the fantasy genre, yet when you think about it, it's not that strange at all.