The whole of Hardhome felt like a lazy, tropey B-grade zombie film with paper-thin cookie cutter characters and sequences. Only relative to the rest of the season was it any good; in the context of the series as a whole, it was still the worst action-oriented episode (Blackwater was best).
I don't recall these cookie cutter characters you're talking about, but I think the Wildling lady and the Thenn guy did an excellent job in their respective roles.
I think Hardhome would have been harder to pull off than Blackwater because there was a lot more trickery going on. You had the whitewalkers, the wights, the men on the ground, Wun Wun, the snow, the water, etc. It had more individual fights as well as more shots of people being attacked.
Blackwater's logistics from an action standpoint looked like something they had done before. Guys running at each other or standing around in big groups, people talking in rooms, swords clashing, then they abruptly ended it with Tywin riding in.
Just because you don't like the idea of wights doesn't make Hardhome less impressive.