I also think native apps will be a big boost for the watch. However, I'm still surprised Apple did not release the AW with watch OS2 off the bat. I know we can't get everything day 1, but for the first time I think Apple rushed the OS1 a bit (I never thought I would say this one day).
Health tracking device that gives you no info on how it works and no "specific" capabilities depending on the workout? (i.e. does rowing use arm movement for tracking? running does not trace your map when you're outside (even with your phone?). Being more informative I hope will be part of OS2...!