Any way to schedule a passive profile-change? (connectivity, volume etc.)
Try the Profile Scheduler app.

With Profile Scheduler, you can define many 'profiles' (a set of settings covering Wifi On/Off, Data-Sync On/Off, Volume settings, Display Brightness, Bluetooth state, and many others -- for full set of settings, please refer to the Play Store page I linked above).

After creating your desired profiles (e.g., Sleep, Work, Outdoors, Driving, etc.), in the next tab (of the app) you can create 'rules' that will trigger a profile to automatically be activated. The 'rules' can be as simple as a 'time-of-day schedule' rule, or something more complex like geo-location based rules, wifi SSID-based rules, etc.