Genesys as a book didn't really provide me as much new content as I was hoping. I can't help but feel like building a Fantasy hack of Star Wars isn't really that much more work than building a Fantasy setting in Genesys. The Magic system is certainly a boon, for sure, but "treat it as a skill and use weapon qualities" is more or less how I'd hack anything into Star Wars.
In the end I probably just had enough experience with Star Wars to not need the Genesys Core to do what I wanted to do, as Genesys turned out to be something of a quick-start Star Wars hacking guide (Years of SWRPG experience not required!).