Already abandoned it. The Lumia 810 left a bitter taste in my mouth after being dropped within a few months of release. Also the constant exodus of apps from the marketplace only helped cement my decision to move to Android. IF I were still on it, the final blow would have been the lack of Fire Emblem: Heroes on Win10 Mobile.
Then again the demise of 7snap and Weave were what actually pulled me to android. 7Snap's death was inconvenient, but Weave was the fatal blow. I honestly never felt that Microsoft cared too much about keep app makers, or even making apps much of a feature in their OSes. Happily I was able to find some love with Android's Outlook app which still serves me quite well.
Now to find a decent music player app...