Lost Wing is just my first attempt at a mod. I used it to learn the process of modding VII PSX. In Lost Wing I just tried to make enemies more difficult, add some new materia and equipment, make stats lower and harder to level up.
Revisited was a much bigger project that I started over a year ago, and haven't been working on lately. It does everything Lost Wing does, only in a more balanced yet challenging way. The locations for enemies has been redesigned, so you encounter stronger enemies at lower levels. The boss fights are a lot more fun. It is incomplete though. Right now I only have a small demo up.