Open vs closed helms: I’ve always preferred closed helmets on minis except for heroes, special characters. Part of that could be my (lack) skills painting faces.
Anyway I like the palace guard tunics vs tallspear minis and PG are all closed helmets so… more palace guard minis but with tall spears! Rah! Oh, and I saw some wfb spearman on another forum with round shields. We’ll see how that turns out.