BRKOUT is right. I was DJ first, then got into chip stuff. It's like a CDJ+MIDI Fighter+GBA+Nanoloop love child.
This is geared towards having multiple units running Nanoloop at the same time in a DJ setting with a mixer in between or to the side. LSDJ doesn't have L-R Trigs so some DMGs on a table and LSDJ are probably more efficient, unless you want to poke buttons.
That being said, Nanoloop 2+ does use the trigs. So there was a need to abstract those buttons up front. Then, the buttons are all small if your doing something like Kodek's Techno workout. https://www.youtube.com/watch?v=eW4BZ6nasDg
GBA problems to solve. RCA/headphone out, trigs, form factor, pressing buttons from standing position, sliding around on the table.
Is it necessary? Probably not. Fun? Oh, yeah. I just wanted to share. I'll probably be making 4 for myself and calling it quits, unless anyone else really wants one. After that it may just go into open source. I've been pricing parts, and it's not cheap.