My current workflow for this is to install the 'simpleSSHD' app on the android phone and rsync the files off at full network speed.

The sshd running on the phone also supports key based auth , so it's pretty simple to automate.

Yeah but for some phones the storage is full ;) I had to figure out how to remove just enough to root it and then just adb in for one phone then I learned that if I extract too quickly it gives up the ghost so I have to add a delay