Hi!
I've just been trying this mod out on ZNES and it's pretty good so far except some of the dialogue seems a bit stilted to me (subjective, probably just too used to Woolsey >_>), occasional grammatical errors and some glitch/typo deals.
The first one seems to be a repeat offender, I didn't get a screenshot of it the first time it happened, but here's a screenshot of it happening at a later point. It seems like if a sentence starts with the word 'If', it gets changed to 'An', if that makes sense to you. >_>

Garbled Kefka:

I think it may be more a glitch than a typo because you have to press A a couple of times before the entire dialogue appears.
Cyan turns into a robot:

He repeatedly protests with the same line until the party climbs on board the train.
Another bit of overlapping/garbled dialogue. First sentence is Sabin's, the next should be Cyan's:

Cyan's actual line appears without error after that dialogue box.
I'll take screenshots of the very tiny grammar/typo errors as I go along but I won't upload/list unless I got a bunch of them together.
PS: I was also kinda sad you decided to swap out Kefka's "Welcome to my Barbecue!" line for the one about watching Figaro burn. :( He sounds a lot crazier in the first one.