Hey; signed up to say that I'm a big fan of the hack. I'm nearing the end of my first play through and think that this hack is by far my favorite way to enjoy FF5. I do have one suggestion for a new feature. Forgive me if what I'm about to suggest is already a thing and I somehow missed it.
I was wondering if it would be possible for you to add a way to continuing leveling jobs past the 30/70 cap without gaining further stats? Perhaps a prestige system where you can optionally reset your job levels, removing all stats and skills in the process, but gaining an increase to the max job level. Levels beyond the original caps wouldn't gain stats, but instead only give skills.
This would allow for people who want to "100%" the job system to do so, as well as add in a way for people who wish to respec to be able to do so.