So what happens if Grimm Nick and Hexenbiest Juliette have a baby?
Would the powers of both parents cancel each other out, and the baby ends up being an ordinary human?
You know, that's a good point. The problem with this whole "Oh noes, Juliette is a hexenbiest now" thread is that it's easy to resolve. We already know that all she has to do is drink a bit of Nick's blood and she'll be turned human again. They could resolve this whole crisis in one slightly kinky evening together.
We don't know if Nick's blood can be a cure since this is a different situation. They made a point that naturally born Wesen and humans turned into Wesen are different from each other. Just because it worked on Adalind, doesn't mean it would work on Juliette.