I missed the iR blaster so bad in my phone that i ended up buying a USB-C IR Dongle in Aliexpress, and i carry it over in my keychain. The need to turn on projectors, AC’s or simply turn off TVs in Shopping malls or Stations was so much to justify the purchase.
Notification LED’s, a REAL proximity sensor (not just the Selfie Camera), the headphone jack, a dedicated Fingerprint Sensor (because under display sensors are still bad).