Do's.
✓ Bypass License Verification
✓ Modifying SQlite Database or changing the value of the app.
✓ Can be overclock , underclock , higher/lower the voltage on a gpu.
✓ Theming status bar or notification header.
✓ Can remove a system app or bloatware application.
Dont's.
× You can not install a latest system update.
× An incompatible tweak may cause an bootloop or stucked on logo.
× You can't run an app with root verification , even you using a rootcloak for that.
× Force close some system apps may cause on your previous removal of a system app.
× An incompatible custom kernel , may lead to hard brick.
× Battery drops really fast.
Yan lamang po ng pagka-alam ko.
EDIT : Yung sa don't number 3. Sa mga napakatigas na root verification na hindi kaya ibypass ng root hide. Katulad ng http injector.