With the reawakening of my FAGE campaign after a six month hiatus that allowed me to play for once, I am updating all my FAGE material.
My house rules came about after reading the rulebook and asking myself, "what about falling damage?" Streamlined rule sets are good, but this sort of thing is bound to come up and it just wastes play time and breaks the flow of the story when the GM has to figure this out on the fly. Then came climbing and jumping, more topics that will come up during play. These sort of rules really needs to be nailed down by the game developers.
After that I looked at the magic rules and while they were serviceable, they were very thin, canonical FAGE magic is pretty bare bones. There were few non-combat spells, for one thing. I added a lot of new arcana to fill in the gaps. Also I like to have minor magicks/cantrips and rituals available (when you have been running games as long as I have, you get used to having certain things at hand).
I made some balance tweaks to characters and adjusted creation, added more weapons and character options, some combat rules I felt the game needed, Mystic Orders/Rune Cults for characters to join, and a few other things. All in all the game remained quite streamlined even after all this.
I am going to be releasing more material after it goes through review.