Final Fantasy Hacktics

That was kinda sorta the response I was looking for. As someone who doesn't have experience with rom modding, it would be understandable why I can't be implemented.

So I've been playing lots of tabletop lately. I was wondering if we could have a new version of the summoner.
The summoner in old FF didn't really summon any creatures, they were just spellcasters with their spells having cool cutscenes. I was wondering if someone could make a modified version where the summoner actually has a bonded eidolon and the eidolon stays in battle for the entire fight.
You pick between an angel, demon, elemental or beast, and you actually have an extra unit with you in the initiative order, having its own abilities and leveling up as the summoner does.

I'm not sure how it would work gameplay wise since I don't have experience with modding. I was thinking between two possibilities.
 1. When you get a summoner you get an extra unit that you put in the unit selection screen
 2. You don't get an extra unit and the summoner needs to do a ritual in battle to call its bonded eidolon and fight along side you.

Hell you don't even need to have it animated, you can just recycle the eidolon's sprite and make it smaller to fit one square.
You don't have to remove or replace the old summoner, just having it as an extra alternate version would work.

Is there a way to make the summoner's eidolon be an additional unit you can control with unique abilities? The summoner doesn't really feel like a summoner, it's just a spell caster with flashier spells.