I want you to work on an update in Premier Pro, for Audio syncing while recording from multi-cam setup. Also keeping in mind while recording from an external recorder. It is very difficult/time-taking to sync all the clips together. Although you have the synchronisation feature it has to be done manually to each clip. Try to incorporate wht daVinci has done, where you can select all clips and audio and with one click-sync it. So that when you drag the clips to the timeline, it will already be linked with is audio file recorded from and external recorder. The manual process took me nearly 6 hours of my time.