@Blackhoodlum, looking into these issues now...
First off, when designing darkling units (by editing an existing one) it isn't possible to choose a pose for the unit when you save it, meaning the unit icon is only a background. It does work to choose a pose for the darkling warg rider though, but that's probably because it's mounted (in other words you get to choose between the 3 warg poses).
Hadn't noticed that thanks. Checking it out should be able to fix it.
Also another visual thing is that all darkling units equipped with helms have them partly inside of their heads with the top of the helmet completely covered by the skull of the darkling and the back of the helmet sticking out of their necks.
Thanks will try and sort something out.
Second, i can't seem to be able to train the darkling shaman henchman, like at all. I've researched cooperation (and way beyond that, too) but i don't see it in my cities as a train-able unit. Are there any other requirements to train them?
Just tested it, worked fine for me. They require 25 Gold and 15 Fame each to train, did you have enough Fame?
If it's not that, then if you get a minute try it with the Empire of Gorgal faction that comes with D&W, and let me know if that works. I haven't tested it with a custom faction although I can't think why it wouldn't work.
Third, the wages for the base unit type "Darkling" and "Darkling Warrior" are really high, 0.3/unit for Darkling and 0.5/unit for Darkling Warrior. The "Darkling Archer" and "Darkling Rider" both have a wage of 0.1/unit (though since the darkling archer and warrior are essentially the same, i usually just base my units off the archer).
Yeah tough one this, not sure what the best way to go is. In the next patch i'm making Darkling units free (like Magnar Slaves). Also getting rid of the basic Darkling seeing as they are pointless after you research Training anyway. Not sure if that's the best way but we'll give it a go.