Hi Dave,
I will see if I can make a show about my media server and how I get stuff uploaded. Although I do have some "imposter syndrome" about it, because sometimes I feel that if it went wrong, I would be stumped! On the positive side, I have all my physical media, so if I did lose the digital content, it wouldn't be the end of the world (but it would be a lot of work to re-scan it). 
Regarding "--delete" - I agree with your comment about the potential dangers with it. Needless to say, I took some time carefully checking it was doing what I expected, then put it in a script so I could avoid typing it incorrectly in the future!