Ahhh, it seems I read that as "hobbyists" the first time, thanks for clarifying! Of course your other points are great as well, thanks for the additional info.
A warm welcome to tube amp modding fans and those interested in hi-fi audio! Readers of Kevin O'Connor'sThe Ultimate Tone (TUT) book series form a part of our population. Kevin O'Connor is the creator of the popular Power Scaling methodology for amplifiers.
Please remember these three principles: respect, sharing, community.