You should be able to transfer music through USB for faster results. Also, it definitely needs to be optimized for the iPad. Rekordbox 3.0 is such a beaut and it needs an app to match! It would also be amazing to be able to plug it into ur CDJ and just be able to play music straight from there as a USB stick. Imagine browsing your library on your iPad just as u can do on your laptop, plug it in and link the CDJs.
JustCaus about rekordbox