can someone please give it a try and let me know your thoughts?
https://github.com/dereckhall/retroscripts
download the above, and copy RomCopy.sh to /home/pi/RetroPie/retropiemenu/
then set chmod +x /home/pi/RetroPie/retropiemenu/RomCopy.sh
make sure your fat32 usb drive has the following layout
# usbdrive: roms-folder:-> nes,snes,megadrive,etc folders with rom files contained within
now restart emulation station, and open up the retroipie section, you should now see a 'RomCopy' down toward the bottom
insert your usb drive, and select 'RomCopy'
let me know your results, thoughts etc.
it looks something like this:

https://youtu.be/_zsy0ElTJxE
Thanks everyone!