Maybe I'm missing something, but I thought this was HUGE (though we all knew it was coming LOL). Those of us with Plus phones and working in a corporate environment are going to LOVE this thing. Leave your phone in the bag, desk, etc. sill have connectivity, can take calls, get updates, etc. without worrying about Wifi or having your phone in your pocket. Those of us who like to workout and listen to more music than you can store on your watch and/or get other updates are going to love being able to leave the phone in the glove box in the car or locker and just taking all their stuff with them on their wrist.
To me, what Apple essentially did with Series 3 LTE is allow us to take a mini version of our phone with us on our wrists. The first time you're out running errands with just your watch and AirPods or Beats you're going to swoon. I know I am. Plus for us married folk with that wife who always leaves her phone behind, if she has a Watch, you can still reach her to remind her to bring the dip with the chips or something while she's out running errands.
There's so many use cases for why this is amazing. They basically untethered the Watch from the iPhone which if I remember correctly was one of the NUMBER ONE complaints when Series 0 came out. The only link is a phone number for the most part. I'll gladly pay T-Mobile the $10 device line fee for my Watch that I already pay for my LTE iPad.
I've been waiting for a good reason to upgrade from my Series 0, Series 3 is that reason. Oh and if the red dot drives me crazy, i'll just paint it.