Done! :D The reason why Royalty gets fewer reviews might just be the steam interface. It asks you to write one for the base game right there on your launch page but to get to the DLC you have to actively look for it.
Speaking of the reviews, I was quite sad to see so many people decry the value proposition. With all the content rimworld got over the years, many other games would be on their 3rd or 4th sequel by now, asking full price every time. I don't even know how many hours I put into the game before the steam release but we're getting close to having more hours in Rimworld than most of my AAA games combined. If that isn't good value, I don't know what is! Although maybe that's exactly it. Next to all the free content we got over the years, perhaps anything that was released with a pricetag was doomed to receive at least some reviews like that.
Thanks very much Nightfish!
For better or worse, people like to judge things comparatively. Which means that the richer a base game is, and the richer the mod scene is, the lower ratings you'll get for any kind of expansion or follow-up.
I think it's one of the sad reasons that some companies lock down modding.