You've probably already done this but my kids loved baking the cookies at the Land in EPCOT.
Maybe re-think what you've missed lately. Although,I can't imagine there being a lot for you to miss with so many trips. On our last trip this May, we realized that we often stick to all of our favorite rides/attractions/restaurants and pass over so many we haven't done in a while. For example, I took my dd's on the Great Movie Ride (they are 8 and 6). In my mind we have done this ride so many times before. I was surprised to hear that neither of them remembered ever being on it before. Same thing with the Land. We often pass it by thinking BTDT. We were drawn in by Soaring this time. It was a whole new experience for them. My kids loved the Land boat ride (and the baking as I said).
Also, at SSR spa they do offer spa services for kids (my first manicure/pedicure). I think they may also have mother to be servces. I am not sure how pricey they are. I know my girls have it on their next "To Do" List.