Can't say much more that hasn't already been said. Been waiting patiently for gen 2, hoping for:
Speed
Less phone dependence
1.5 day battery
Possibly a 46-50mm option (hoping)
Some more health sensors
2nd gen is going to fix and improve so many things, can't wait.
Already has 1.5 days. No good, if you want a useful amount to not charge it every night you will need 2-3 days at least. And that would require quite a battery size increase which Could work if it was a huge 46-50mm; you have seen the watches before haven't you?! Unless you are Massive with hulk arms it would look ridiculous!
I'm not sure what other health sensors can be added without having to go through medical device approvals, expensive, slow and also "shows their hand" to all the other manufacturers years ahead of release.