What Can Be Hacked (Known Aspects Thus Far)
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Character Stats: Yes
Character Growths: Yes
Class Stats: Yes
Class Growths: Yes
Item Stats: Yes
Miscellaneous Character/Class/Item Info: Yes
ReClass System: Yes
Unit Placement: Yes
Unit Classes: Yes
Starting Inventories: Yes
Unit Allegiances: Yes
Events: Somewhat
Text: Mostly
Shops: Yes, with limits
Chests: Yes, with limits
Animations: Switchable, palettes, no customization yet
Map Sprites & Animations: Yes
Palettes: Yes
Chibi Insertion: Yes
Portrait Insertion: Yes
General Graphic Insertion: Yes
Custom CG Insertion: Yes
Custom Battle Backgrounds: Yes
Custom Dialog Backgrounds: Yes
Custom Maps: No
Some Miscellaneous: Yes
General Music Editing: Yes