I broke down and got the Gold Leaf Rub 'n Buff. It still doesn't compare to real gold leaf, but it's definitely a step up from the old color.
For the paint, I mixed the color better - started with the same red again, but only did one drop of black and added a lot of brown - and only did one streaked coat. The bits of gold showing through made the worn spots more natural this time, and matched the reference photos better. I also did fewer worn spots, same reason.
Aaaaand done (almost). I just have to figure out the dusty weathering. I'll probably try some Plains Dust. For now, I'm so much happier with how it turned out, and locking down a good technique makes me more hopeful for the eventual Version 2.0.