Project Overview

As mentioned, one option is to migrate the characters slots for Gogo and Umaro. Gogo (id 12) and Umaro (id 13) may become the new guests characters. They may be added in the roster by events or the Guest Adder code. Their old slots can be recycled for the two new characters. One of them will be Iris.

The positive aspect is that you don't need to change the equipment code, because the new characters will inherit the flags used by Gogo and Umaro. Probably, the settings of the two new characters  may be easer this way. Guests may need special code alteration because the game engine handles them differently from normal characters. However, since the new characters are actually default recycled characters we may avoid these cases.

Another positive aspect is that the new two characters can be used in the World of balance as well.

The negative aspect is that Gogo and Umaro will became guests. Because of it, they can't change equipment. Honestly, I don't care too much if Gogo and Umaro can't change equipment. In the default game, Umaro can only change their relics and, perhaps with a few exceptions, in my opinion, Gogo's equipment is lame. The new characters should have better options for their equipment features.

We also need to migrate their special features. We probably can easily update the 'automatically attack' feature for Umaro and the 'select commands in status screen' feature for Gogo in their new characters slots.

If you don't care about the lack of equipment change for Gogo and Umaro, i believe it ias a valid route for this project. But it is only a suggestion.