This is an evolving technology. the other file systems being able to be used is fairly recent and i assume the other loaders will want to keep up on. the wbfs format is the ole' reliable for most softmodders and the other file systems will continue to gain support as well. I always recommend to ppl to make use of all 3 file systems on a drive, especially one that is that big to be ready for anything. Usuall the fat32 partition is used for the loader configuration files and cover artwork as well as homebrew apps and roms for emulators.