Automatically adding tracks to accommodate inserted clips was a popular feature request, and is unlikely to be removed
Would you prefer a warning?
An error occurred while saving the commentSteven Vincent commented
Actually, some of this is already in there. I find that premiere's auto patching if fine... it even remembers from source to source where I wanted stuff patched. Where I have issues, is if I have a sequence with 2 audio tracks and a source with 8. I have to add the extra 6 tracks to my sequence to all me to select the two source tracks I want to patch them and turn of those that I don't. THAT's annoying. I shouldn't have to add tracks to my sequence just to turn off source tracks.