Separate Master Bath
Our current house has two full baths. The bathroom downstairs has a standing shower only, which we never use. We share a bathroom upstairs with the kids. In the new home we will have two upstairs baths and 4 sinks between them! We can shower in the morning without worrying about waking the kids and more than one person can brush their teeth at the same time. Our family had a case of food poisoning/stomach flu earlier this week. I was really wishing we had the extra bathroom space now. Plus, we have a separate guest bath, so my guests won't have to use my kids bathroom. Which, I've already decided, they will have to clean themselves. (The kids, not the guests!)
Above are my current bathrooms. What an upgrade we'll be getting!