1) I do plan on making a widget. I have a lot of requests coming in daily and I am trying to prioritize them and implement them as soon as I can.
2) I would like to be able to import the stock music app playlists but have not found a way to do it. I am still researching how I can do this. I haven't been able to find where the stock music player stores the playlists and if it is available for 3rd party apps. If, like you say, other apps have done it then there obviously is a way to do it.
3) I am not attached to the current icon and am willing to change it if other people would like something simpler.