Well, this picture helps a ton. Gives us lots of insight on the scale of the Grotesque vs Wracks vs Talos/Cronos and Scourges. The Grotesque looks about the size I had anticipated, while I have not yet gotten to see a Talos in hand, but it appears to tower above all other models.
Is the Talos/ Cronos really standing that tall and far above normal models? Looks like we will need a raider to hide the dang thing.
On a personal note, things are a little short for me today, and possibly tomorrow. Family emergency.