Jansen's stats (not yet, it only affects numbers in the stats' menu)
Jansen's weapon slot
Jansen's ring slot
Jansen's accesory slots
Jansen's inf. MP and HP
It would not have been possible without your help and the accessory pointers in your table. There are no words to express how grateful I am. Since 2008 (when I bought my first copy of this game, all I ever wanted is to make Jansen a full offensive/support caster. Today marks a huge step in accomplishing this. And, again, all thanks to you

Still some things to figure out: unlock some more accesory slots and alter some of his skills learnt by levelling up.
EDIT: It seems that Float Big Endian stats do only affects numbers in the menu, they have no effect in battle though.