iOS 11 Early Returns

Some first thoughts on iOS 11:

• Appears to fix problems with Reminders not synchronizing in the cloud (but let's give it a while, this always worked well in the first day or so after a reboot).
• UI changes are a mixed bag:
  • Round buttons for the calculator vs. a grid before, meh. This appears in multiple locations.
  • Email has a much more visible (but real estate-hungry) bold title for each mailbox.
  • The Control Center is now super busy, partially reverting to the status quo of iOS 6 (and 7?) where individual apps all had control of audio out (the AirPlay logo that occupied a tiny piece of each app's real estate). I find this not only confusing but annoying; if volume is still in the Control Center, why not audio out? 
• The ability to select which part of a Live Photo (still photos are now stored as short video clips) looks like it should be great, and overdue; this should have been rolled out once Apple started storing stills as Live Photos.
• The Health app still sucks, failing to deliver core functionality that has been part of FitBit and other fitness wearables for years. Particularly, the only place one can set goals is inside the Apple Watch's tiny user interface. A horrible, horrible design flaw that makes the Apple Watch almost unusable as a fitness tracker.
• Air Play 2 adds a functionality long available in Sonos products, the ability to play the same music on multiple speakers throughout the house. This is better developed in MacOS iTunes 12.7.0, but the fact that they're doing it at all is a good sign.
• Battery life takes a huge hit, with Wandera reporting battery consumption twice the rate of iOS 10.
• I have also had problems with iOS 11 interacting with my Ford SYNC for music. SYNC will play any given song for 20 seconds and then stop. It exacerbates a long-extant problem forgetting which song in which playlist is active, and starting at the top of the alphabetical song list when first plugged in to the truck's USB port by doing this if you push the vehicle's play button after the song stops. A horrible failure that can be worked around by using Bluetooth audio at the cost of some (mostly unnoticeable) compression.
  
  Update 15:44: It appears that this problem is now gone.