For Fenix 3 (and compatible devices), it would be nice to be able to have the ability to choose when you have Bluetooth active.
USE CASE: When you're sleeping you may not want notifications at all.
BENEFITS: Battery life can be conserved and you can essentially schedule "quiet hours".
HOW IT WOULD WORK: The two options would be: ALWAYS ON or SCHEDULE
Schedule would then let you pick an start time and end time. Also, this could respect or override the SMART NOTIFICATIONS settings. Whichever makes more sense.