So, here is the completed warband. I think they represent some kind of yokel cult, who celebrate the arrival of spring and summer with wild dancing and the like, and the things they summon. The two knights are probably semi-magical figures who wax and wane with the seasons. The dryad is a being of the deep forest, that ventures out to celebrate (and wreak havoc).
What shall I do with these guys? Well, I've got vague plans to try to "medievalise" the rules for Hardwired, in order to do a fantasy variant. That might be good fun, and this warband would make a good squad of champions for it. I'll have a think about it, but Hardewyred is definitely in the project list.