I know this section of the forum is filled with people pitching ideas for fantasy boxes that didn't make it past round 2 of the big community vote that we did a while back, and while I don't claim that this idea is any different, I ask that you hear me out.
Myconids. They're present in so many settings yet still so underrepresented. There is a lot of ambiguity over how they look and feel from setting to setting which gives WGA more freedom to make them as they wish. I personally love the desgns and feel of the myconids from the 2008 Wii game "Mushroom men" (some concept art can be found HERE ) Myconids are often seen as having no tech but I think the idea of them having salvaged technology and even tech which is bassed off their biology, like eating wood which could be used as armor, would be perfect. a sprue with 4 or 5 bodies, a series of heads with different caps for different mushroom species (say 5 morel heads, 5 heads with normal gilled caps, and 5 heads that feel more like toad from mario) options for stone axes, bows, or spears, and even a few wooden shields and a staff for a leader or wizard