Citing Patreon supporters makes me think that you still don’t get what formal usability testing is. Patreon supporters tend to be the ones most likely to read all of your articles, so they’re going to be looking at any final rulebooks without fresh eyes. But the bigger issue is that if you don’t have someone sitting in the room taking notes without giving clarifications and corrections, say, if you rely on Patreon supporters to report their own problems and play experiences, you’ll get useful information, but a very skewed data set. Anyone giving feedback online is likely to focus on reporting only the issues they perceived as big or important (to them), and you’d miss a lot of little stuff that they might not consider an issue because they were able to eventually figure it out (though it took longer than you’d like), or they decided it wasn’t important.
But I take your point; this isn’t the place for lectures, and I’m sorry for the length of my previous post. I have a tendency to over-clarify without noticing or curbing my post length. I meant to inform, for those who had no idea what I was talking about, not lecture.
While I was making the post primarily because I think serious usability testing might help with your future games (including Fantasy Strike), I recognize that it won’t change anything about Codex.
So here’s some advice that can improve Codex now for a lot of players:
Offer a free (or very cheap) left-handed version of the Codex playmat via print-and-play. Just mirror image the original files except text, then move the text to the appropriate places. That would make a lot of left-handed players like Bomber happy with minimal effort and cost to you.