Modification involving saved data is very difficult.
Also, it is not possible to install multiple patches to change the format of saved data.
You can only one install patches of saved data.
Also, the save slot capacity available for GBA is limited, so you have to save it.
Depending on the nature of the saved data, it is not possible to use variable length compression.
Since the save area is valuable, it needs to be saved in 1-bit units.
Can spend valuable frames to free ID: 0x45 or later?
That is a very difficult problem.
I would like to increase the inventory of the transport team and use it to exceed the status 31.
Besides, the number of base points in the world map, the number of roads, separation of magic/power, expansion of classes,
There are many places we want to use valuable free space of save data.
Therefore, I think that it is better to adjust the data so that it does not exceed 0x45 instead of expanding save data because it exceeds 0x45.