No I haven't. In fact i've said multiple times if he's BPA im good. There's a discussion to be had with two sides.
Correct. That's a waste.
Again. Drafting a RB at 9 has two opinions. It's not the best team building move but if there's no OL/DL there of value you take him. If you take him you need to actually utilize him more than 6-8 touches.