"Normalising" Umaro & Gogo

In my hack, I've changed Umaro & Gogo into two new characters, and I'm trying to make them behave as much as a "normal" character as possible. I'm stuck on a couple of minor final things, though. Here is my list of progress:

•Change character sprites/faces/names/data—Complete
•Cause names to appear correctly in ending scene—Complete
•Change dialogues at the times the characters join—Complete
•Change (pertinent) Umaro monster data/script/graphic (to new boss)—Complete
•Cause Umaro to be controllable in battle—Complete
•Cause Umaro's equip menu to be accessible as normal—Complete
•Cause Umaro & Gogo to be able to learn & use all spells—Complete
•Change "equipability" of certain items to include Umaro & Gogo—Complete
•Cause Gogo's Espers menu in Skills to be accessible, allowing Esper equip—Incomplete
•Remove Gogo's ability to change battle commands in Status screen—Incomplete

Those last 2 items are what I need help with. I've done extensive searching and have used a wealth of tools, including hex editing, to get the hack where it is so far, but I've had no luck achieving those last 2 goals.

I believe that list is exhaustive (i.e., if completed, you could have 2 fully-functioning normal characters), but it's off the top of my head, and I've been too lazy to keep a changelog.

EDIT: The second-to-last item has been completed; I can now access Gogo's Esper menu and equip espers.

EDIT: The last item is now completed! Please see the newest post in the thread for thanks & how it was done.