Another great idea would be date-themed Apple-made watch faces that passively load in the background. Think of it as Google Doodles for your watch face. Call it “dynamic date” or something.
Imagine you wear your watch around Christmas and it surprises you with a Santa themed face when you put it on one morning. Or valentines, or Chinese New Year, or halloween, WWDC, St Patrick’s Day, Holi, Ramadan, or any other special occasion. It would certainly encourage me to wear my watch more regularly. Fitness tracking is my primary purpose for wearing the WATCH but novelty would rank higher than notifications if Apple was to do this.
Imagine how much return-to-product they could drive if people online (or at the water cooler) were talking about how awesome the watch face was this week.