The Gracia Content for the most part is closed off. Our focus is primarily on getting everything working that came before Final then we can focus on the Gracia Final continent.
Our biggest work comes from having redone weapons, armors, items, and npcs with retail data. The NPC updates was the hardest one (and there are about 800 npcs left to update). We have a dev working on Beleth and steel citadel right now (so that includes Epidos, Tully, Demon Prince, Ranku, etc). We've removed the quest and level restrictions for entering Hellbound Isle as well. We feel that HB is enough of a challenge that we don't want to force players to quest simply to enter and find out they aren't strong enough yet to face the challenges there.
As for skills, there are only a handful that don't work now. Those being things like Hide (level 83 dagger skill for full invisibilty), the seed skills (working on a trigger system right now for them so that incremental levels of the same skill can be triggered), and there are a few minor things (like limiting triggers based on the amount of damage recieved and defining a minimum amount).
So aside from those little things, for the most part, we've busted our ass off not only fixing broken skills, but also updating all working ones with retail info (including new base land rates, reuses, and hit times).
We've balanced the usage of hero skills, making them have static hit and recharge timers, same with the noble skill. That way no class gets an advantage based on their gear or buffs.