Looks like you might posses valuable knowledge that some are Googling in vain, just as you said. And you have quite pleasant writing style. I would strongly encourage you to document at least some of the endeavours you had with GnuCash, in your free time, for future generations.

Not that I'm using GnuCash or even consider it, heck, I'm not even freelancing. However, people like you, sharing knowledge, are what keeps the Internet alive ;).