Hey all - I've been getting enough painting in for an update: finished a squad of Rust Stalkers and five more Vanguard w/ a single Arc Rifle. I also added Alphas to my larger Vanguard squads (one with taser goad, one with arc maul).
These larger pics really show how bad I am at assembly -
I found some waterslides from the Bolt Action German Tanks set that I used for numbers, pretty close to what I was looking for and I'm happy with them. Added markings to the Onagers and Kastelans. There's a few subtle warning signs on the Onagers from the Skitarii decal set (if you look hard enough).