Hey!
I think would be great! Its not needed, But it can be a great feature (:
Because i tend to hook up my laptop Via HDMI Cable to my Tv in my room, Just so everything is bigger and plus i have a really expensive stereo system for music.
I dont have a wireless mouse or anything, But i have a wireless keyboard..
So why not add it in? I think it could work really well because it would be compatible with the interface!
Up - Scroll up
Down Scroll down
Left - Scroll left
Right to scroll left, Pretty simple?
And to enter the "Folders" In battle and at the menu would just to hit "Enter"
Or something?

I think it would be great! It would fit the interface so well i cant see how its not in yet o:
It shouldn't be that hard for the Devs to code either (:
i hope this gets noticed! Dont let it fall to second page and comment your thoughts (: