1.Samsung Notes app is very good , i am not a tech expert don't know whether it's possible or not, Samsung should have ha all in one document viewer app or can update notes app with all documents viewer app, making it's more smooth yes ofcourse you can add one time purchase for all features.
It's my POV
2. Samsung smart things app should alos support other brands
3. Startup logo or theme (GALAXY/SAMSUNG)should be there instead of showing android is starting
THSES will make Samsung different from other brand in my POV
