Almost anybody/thing can be a good replacement for cait sith XD
Aeris is a good choice though; have you seen the Aeris Revival mod? Check it out, it at least lets you use Aeris
I dunno about swapping the entire field, battle & general role of these characters (though that would be great). ^^
Yes I see this!!But is incomplete for add in mod and not understand how apply this path!!
The comments not problem I can re-translate dialoges xD
But how can comence, how can first change the char in scenes??
The idea is:
1.Change char in scenes (aerith for caith sith)
2.Change char in battle (aerith for caith sith)
3.Re-translation somes dialoges