I'm glad to see your enthusiasm for editing continue after cutting your teeth on my project. Just like translating, you will keep getting better with every editing task you do, and then you'll look back on your earlier works and be disappointed by what you did. In your case, it's clear how much you've been thinking about this based on your further research towards improving your editing and I'm glad to have had you as an editor. The community should welcome any competent volunteer and be even more grateful when they're as thoughtful as you're being about the process.