I might have one...I'm working on many projects actually, but a few of them are ROM-hacking related :)
My FF6 project has been an idea for years, just haven't gotten around to really making it yet. I would use it as a practice run for more potential hacks, but I'd be limited to what the utilities I had could do, and what I could accomplish via hex editing.
A key thing to note about my hack is that espers will no longer be used to learn spells, but instead, you could only learn spells through items. The main purpose of espers will be for stat boosts now. Also, items for the most part will only be available as drops/steals/morphs of enemies, most treasures will be replaced with non-equipment items, as well as most shops. This is to add challenge even to those who know where all the game's treasures are, and so I can re-organize the items list to my liking and have as many weapons/armors/accessories as I like.
We have EVEN MORE themes now, but some old ones are gone...