new models and such are only cosmetic changes, if you will.
you replace old characters' models/skins/sounds/whatever with other models/yaddayaddah, so you can see the custom model you have installed, but people online will still see the model they have installed with the same name.
suppose you download a gogeta model and replace your old goku model with it, everyone playing goku online will look like gogeta to you and vice versa.
Someone would like to replace goku with gotenks, if they just wanna have a character change, if they just never liked goku but they do like gotenks, maybe they want to be able to play with him (well in a way, sicne it aint the real character only a model change)
there is 1 thing what still botter me.
i pay'd bfp and bfp has it better in that option.
when you place an model just in the map the game auto. picks the model in the game and every model has his own attack while in esf the caracter has to be replaced and the attack are stil the same.
well thats an releaf, finaly i cleart my mind.