Well, you can check some resource at bottom of this page which contain original brawl files:
http://forums.kc-mm.com/Gallery/Resources.php
Since I'm new to this and a PAL user (still using Project M 2.5b version), well:
private > wii > app > RSBE > pf > fighter > "character name" like ganon, captain, mario (for characters)
private > wii > app > RSBE > pf > info > portarite contains InfFaceXXX.brres File
private > wii > app > RSBE > pf > info2 contains "info.pac" and "info_training.pac"
private > wii > app > RSBE > pf > menu (some menu stuffs of brres and pac files)
private > wii > app > RSBE > pf > menu2 contains mu_menumain.pac and sc.title.pac
private > wii > app > RSBE > pf > module (rel.files for collision structure, notely for stages like st_battle.rel)
private > wii > app > RSBE > pf > sound > strm (for music)
private > wii > app > RSBE > pf > stage > melee (for stage appearance like STGBATTLEFIELD.pac)
private > wii > app > RSBE > pf > system (common.pac, common3.pac, common4.pac and common5.pac)
in private > wii, contains app and title folder
in private > wii > title > RSBE, contains data (BIN File)
in private > wii > app > RSBE, contains pf, rp and st folder (rp and st folder contains some BIN.files)
There are other stuffs as well which are important to put in (which are BIN.files i mentioned above), but since you removed the private folder which included these, I don't how to do there. Only shot i can give to you is the link i gave you.