I took a drafting class in high school. The first 6 weeks were just writing training. I was fully indoctrinated. That and Pilot G2 pens write so well. I need more work on my lowercase consistency though.
I haven't followed this thread but it appears you aren't listing references. I would suggest to add those. If you ever have to sell, that adds a level of confidence for the buyer and helps the seller (if you consign) add to the listing (you'll probably add some rare listings they might overlook). I like the original logo.