WeDJ + Rekordbox integration
A couple suggestions that would make this app amazingly powerful:
1) Integration directly with rekordbox (either through a direct sync to WeDJ or talking with the existing rekordbox app library for iphone, particularly the latter would be best). Accessing cue points/beat grids/playlists natively would be incredible.
2) Adding a playback mode accessible from the lock screen. This would completely remove iTunes from the equation for me. This or to improve the playback features on the rekordbox app.
3) Sync with rekordbox to iphone rekordbox through USB cable. The wifi is slow and unreliable, this could be so good.
Otherwise the new update looks great, I think these two points would put the app over the top.