Hi, sorry for posting so late.
I was asking if you request is still live issue because I want to take it on.
I'm having big problem's can't find original Chinese ROM, so I can't use your patch and see what empty places in ROM you have used.
All I could find is Lindblum's English patched ROM.
But back to the topic: I can successfully add new sprites to the battle. So I can make animations mentioned in request page
Unfortunately, there's not enough space in NES's Memory to have all sprites.
Game uploads all character battle sprites at once, even if you have only one hero in battle, game uploads also other characters sprites to memory.
Taking that into consideration, I'll have to write a function that uploads sprites and takes into consideration which hero is in the players party. Just to make sure: You can't have more than 3 characters in battle, right? (I'm talking about hero's party).
You see, I actually never played FF7. Do not kill me. I'll looked into it a little(google, YT etc.) and it looks like 3 is maximum number in original, is it the same for NES port?
About other things mentioned in the request-I can work on those after I finish this one.(Also, I'll want you to explain how you want certain things to work).
Also, How actually do you want to script be handed to you? I think that IPS patch may be bad idea.