This channel is about showcases only and also the mods in this game are not as useful as in other games. So sadly you will not see a tutorial or something here..
It's this guy's bread, so he's not gonna explain to you how he does it even though it's not even all that complicated for the basic stuff, you can tell by the lame ass excuses, plenty of fuckwads like that in modding communities, sadly. The gist of it is, get a hex editor like HxEdit, navigate to the game's folder mdl -> tmd, find the 4 files of the player you want (pl0000 is Tsubasa's info for instance) and then copy/paste the relevant bits of the file to the player you want, (Hyuga is pl0001 IIRC). That way you can basically have Tsubasa's face on Hyuga, and the facial animations will play as best they can with Tsubasa's face. You can figure out which file is which player by going into the Friendship menu in-game and subtract 1 to the card number. It's the same principle for most everything else, including goalkeeper save animations and so on, you just have to find the right file to mess with, Super Saves are in Characterparam -> SuperSavingMoveScript for instance where you just have to replace the names of GKs to swap their animation set. Not sure it's possible to do what you're asking for completely, but who knows, backup your files and experiment a lil'.
