I second that! I finally decides to make all my music to a server and everything is well cataloged but I can't enjoy my music using Poweramp anymore, I've started using DSub but it's nothing compared to Poweramp.
I voted for Google Music support but Subsonic support (a bit like XenoAmp) would be great! Having the ability to cache tracks like in DSub (for Subsonic) or download them like in the Google Play Music app would be the best possible option but getting music streaming working is more a priority for me. Keep up the amazing work!!