Let's discuss Iris Havengard

I agree that her ability was too ambitious, and that more than anything is what killed the project. Here are the abilities that I see as easy-to-implement.

(Ranked in order of desirability to me)
1. M.Sword - Iris has the ability to assign elemental attributes to her weapon strikes. This fits well with a physical-based character.
2. Morph - Give her the same ability as the Ragnarok summon, with a lower chance of success.
3. Wall - Iris can cast Wall (Safe+Shell) on 1 character for free.
4. WallChange, as you said. I just don't think it's particularly useful. Enemies don't often use elemental magic on you.
5. Debilitate - Change Edgar's tool into the Bazooka, and make this Iris's primary ability.

Here comes a (bad) thought. Would all that work be compatible with that code that would allow a character to create a new menu with eight selection and if so, would it be a good idea to just give Iris her own selection from the above (except M.Sword, which would be too much work on its own to code to be relegated to a menu option)?