Yes, totally agree with this!! Golfers need an app for MS Band.
All the sensors (GPS, UV sensor, Heart rate, 3-axis accelerometer, Gyrometer...) will help gather lots of info on the Golf round or any practice session. With some Power BI, it would provider to the golfers awesome stats that any other app or watch could provide.
I can imagine downloadable golf maps where you could start a round of golf, with the help of the GPS being able to see the distance to the hole on each hole, enter your score and stats (putts, measure driving distance etc).
Then the app will of course give the stats of the round + stats on number of kms, number of steps, calories, track on a map, average swing speed (what else?) + nice visuals.
Another option would be to start a practice session to measure swing speed, accuracy, movement and so many other data.
200$ is way cheaper compared to any other golf watch if we had those features and considering that an MS Band can do more (mail, FB, Twitter....).
I am personally dreaming of it!