Overall, I’ve found this product to be mostly helpful if you’re looking for non-epic, low-fantasy seeds. Therefore, I’m awarding it a 4. My feeling is that it’d earn a 5 if I was at all familiar with Hârn, and reviewing it as a straight-forward Hârn supplement.
In the end, it’s free, so you can’t really afford not to check it out!
It sounds like it might be a nice mix with Mr. Bezio's Phoenix Barony setting.