Coming back to answer all of my old questions as I've figured them out now. :)A) There are no drawbacks, listings who get deleted retain their feedback for four months after their deletion. For more information: http://dkn255hz262ypmii.onion/index.php?topic=32573.msg370788#msg370788B) I've found nothing indicating any kind of restriction, and with the ability to delete listings after they've been used that issue is solved either way.C) No issues as far as I can tell as multiple vendors do this all the time.D) Can be solved by doing a stealth listing and sending that link to the buyer the Custom Order is intended for.E) No restrictions. I had a customer who claimed Custom Orders would only work if they had an option of minimum 0.01 BTC in postage, this turned out to be false though and free shipping works just as good.