You are right, drop downs may be a bit of a problem, but for those simplifying their navigations (which as a consultant I always suggest for better UX)it would be a cool feature to have.
*I’m trying to get you to put in place all the bits I am finding I am needing when building sites which at the moment means I can’t use GP as much. But if we can get all these bits in GP I would use it on every single project… in fact I am going to email you again in a moment… check your emails!