I think it would be pretty cool, but as it is a rules supplement, the great thing is that you can still choose not to play with it. Just play a regular game instead, after all!
I might give it a go. It makes sense that this kind of supplement would release alongside an army such as Tyranids or Imperial Guard. When/if I get either a Harridan or - my preferred option - a Hierophant, I will definitely give it a whirl.