Notes would be great...
These are in no particular order:
1. “Find My iPhone” App similar to what Find My Friends” has on the Watch.
If you lose your iPhone when you’re out on the go, not everyone has access to their iPad or a computer all the time. Would be great to be able to locate and or wipe your iPhone on the go with the Watch. I tried emailing myself the iCloud web link from a computer to be able to access it but it won’t open on the Watch. Other websites like FB and Google work a charm with this method.
2. The ability to initiate a call from the watch and send it direct to the iPhone from the Watch. Most of my time at work is spent in a car (that has Bluetooth) but the car infotainment is very clunky and would be nice to just raise my wrist, make a call and have it come over on the car’s Bluetooth system.
3. Able to see incoming calls on the Watch (answer, silent, decline) even when the iPhone is connected to another Bluetooth device (a car for example). Bluetooth 5 should be able to handle this. Case in point, I was out of the car for maybe 10 minutes with my phone on the car charger and connected to the car’s Bluetooth and my Watch still within Bluetooth range of the iPhone. During this time, I received and missed an important call that I was expecting to see on the Watch but never showed. After testing, I confirmed that the Watch will not show an incoming call while the iPhone is connected to another Bluetooth device, a car in this case.
3. Built in Calculator, Voice Memos and Notes like the OP suggested.
4. A notification if you break Bluetooth connection with any connected device (iPhone or AirPods). This way you will know if you accidentally leave something behind before it’s too late. The Watch is the only device that once it comes on, stays on and very difficult to misplace so it would make sense for it to have this capability. If not, maybe a geofence for wishlist item # 1