Final Fantasy Hacktics

It's been a while since I last dropped around good ol' FFH. I have missed this place a lot.
I wanted to drop by and say hello to everyone again, meet up with some of my buddies if possible...That sort of thing. I've been trying for a while now to  get onto the chat but something about the software where I am is preventing me from being able to do so.

Without going into too much detail: I was gone because my mum died (in February), and I was really busy with college. Then I got kicked out of my house so the whole moving process took quite a chunk of time and energy but now I'm mostly settled down again...

I dunno if anyone remembers me, but I've missed you guys and the FFH community in general.

I know we can extract the music from FFT and convert it into listenable forms et cetera, but here's a question, could we insert new music? Is that possible? I'm a musician and I think it'd be stellar if I could put some new tunes in. Not to dismiss Uematsu, his work is incredible and I love it to death. It is, in fact, what inspires me as a musician a lot of times. I was just thinking, you know, if I created my own patch for release, that having some custom music as well would be nifty.

So, I wanted to modify Geomancers a bit. I've always loved the class, but disliked how...weak, it is (Speaking subjectively, of course). Well, I did a bit of updating, and now I have Elementals that are unique, with different effect areas, damage modifiers, etcetera, but I don't want them tied to topography, and for them to utilize MP instead. I got the mp bit figured out, but how exactly do I work around them being tied to the topography? I tried moving the elementals into a different skillset and giving that skillset to Geomancers, but it's capped at four abilities, regardless of how many I have learned, and those four abilities are always the first four in the list, whether or not I've learned them yet. I also tried changing Elemental's Action Menu from "Elements" to "Default" and that displays the whole list, but suddenly the skills are limited to one panel in range, no effect area, and 0% chance to hit.

Any advice? It would be greatly appreciated...I'm kinda tearing my hair out here, so to speak. Or should I just give this up as a Fool's errand and just up the Y value of Elementals to make them stronger? >_< *Sigh* Anyway, thank you, in advance! I'm also sorry if this has been brought up before.