no benefit, on the contrary.
A lot of users don't want or don't like using SD card. I really don't understand why, it's so cheap and doesn't hurt keeping a little plastic piece on your console.
I personally prefer using SD card :
- Loads faster
- Doesn't have spin up and sleep time issues
- some homebrew don't use USB at all.
- Place all resources (configs, themes, wiitdb.xml, audio, etc.) on SD card or you might lose and corrupt your HDD if you are using multiple USB Ports. (multiple ports are closing USB and reopening the other one. If you have settings file or audio file currently playing in background music, switching ports will have undefined effect and could crash or corrupt your HDD).
Having all ressources on SD ensure that switching USB Ports, the files will be always accessed "sd:/" will never change and will always be mounted.
When we added multi ports support, we warned the users not to place resources on USB.
But it went unnoticed, nobody read changelogs and recommendations u__u
If I have time, I'll like to add checks on all current paths before enabling dual ports, if it's not using SD the loader should refuse to enable that option.