Please fix! Rekordbox Android Usb hub. Usb thumb drive with android rekordbox.

I know it is not possible now, But would a update be possible to where you could plug a flx4 into a usb hub, Then your phone into that usb hub. The flx4 would run rekordbox mobile via the android phone, But simultaneously the phone would be able to read USB thumb drives formatted for rekordbox which are plugged into the usb hub. 

This would allow battery powered B2B sessions using Rekordbox mobile. 
Right now there is no way for the flx4 using rekordbox android to read a USB thumb drive, Which is a severe letdown. This means if im running my deck on android, Noone can play any music aside form what i have already loaded onto my phone. I wanna be able to run usb thumb drive powered b2b's with my friends, and I dont wanna take my laptop camping. 

Is this something we can fix?