I don't have version 12.9 yet, but in the meantime here's some FFC values I'd like to be able to access in the future:
bool DrawOver;
bool Translucent;
bool CarryOver;
bool Stationary;
int ComboW;
int ComboH;
int TileW;
int TileH;
int Script; (changing this sets control flow to the start of the newly referenced script.)
int LinkTo;
Being able to change these values on-the-fly would allow for some not insignificant animation techniques.