For the 3D consoles you'd be better off with a GPD XD Plus - Its superb for the N64 / PSP / PSX / Dreamcast and everything below.
I've just accepted that the 3ds will never be up to that.
What i personally want is an Amiga emulator, a decent ZX Spectrum Emulator and some decent Arcade emulators then i can put the Vita back in the drawer :-)