FFVI: Divergent Paths

TWUE expands the rom to 4MB, so seemingly yes it would.
By figure out the pointers, do you mean how dialog is called during events and such? That would fall under event code. FF6Tools could handle it, there's an event editor built-in and it should be able to work with DP I'd imagine. If not, there's an event dump text document and hex editor way which is just as easy if ya know what you're doin lol.

And yes, creating an IPS is a very simple process, you can use Lunar IPS and it tells you the basic instructions as you make the patch. Yet still many blunders have happened while making a patch, even though it's very simple lol.