I agree with both of these.Replace the Stand Ring with a Steps ring. Yes you have the Move ring, but that tracks calories, not steps. I think the Stand ring is the most useless ring of the third, yet it's the one that kind of hamstrings you to the watch.
Also, something I noticed going through the watch faces, most of the faces are analog and not digital. I would love more Digital watch faces and be able to put more compilations on the face itself.
Besides that —- battery life —- as stated already is the biggest one for me.
Another frequent hassle for me is not being able to say “set a timer for 45 minutes” just because I left my phone barely 100 feet away.