Hello, 8 Bit Fan.
I played this hack when it first came out and had an absolute blast. FFIV has been a favorite game of mine since it first came out, and your hack was a refreshing new twist! I felt like playing Ultima again, and was happy to see it's been updated since. Here's my feedback so far:
When I got to the room with Octomamm, the room seemed kind of wonky, and I couldn't open the two treasure chests.
Secondly, there was a couple of typos in Edward's battle with the Sahag. I don't recall it verbatim, but she said "Youe must rfight" or something to that effect.
Third, I'm now stuck upon getting to Mt. Hobs. I spawn inside the mountain.
I'm pretty sure I patched the right headered patch onto a headered ROM, but I'm not 100%. I have to assume I did it right, though, because my first try at patching left me with a game that didn't even start. I got my hands on a different ROM a little bit ago and I'll try it again later. Nature willing, if I don't have to work tomorrow, I'd like to spend the day streaming the hack.
Thanks for your hard work on this!