1. INTERNET SPEED METER
2. GESTURES(on screen when screen is locked)
3. APPLOCK(which is now available as an inbuit hidden feature)
4. SCREENSHOT (not so easy using palm capture)
5. WPS settings in wifi
6. SCREEN RECORDER in core version.
7. Change FINGERPRINT ANIMATION.
8. Notification sound when device is FULLY CHARGED.
Samsung is always been ahead in supplying us with great features.
But still there are some..features....you think might be useful (
Let's take these to Samsung's notice.
(Feel free to increase support to this issue considering the fact that you (
need) want these features)