For anyone that might still care about this, I'm bringing this thread back from the dead.
I've successfully taken one of these:
https://tinycircuits.com/collections/all/products/tinyarcade
And made it play the Discs of Tron attract mode video on loop. Next up I plan to use my laser cutter to re-cut a cabinet for it in the proper DoT upright shape (no, I'm NOT doing an EDoT) as well as do a marquee (hopefully that lights up).
Once done, I'm going to put it in my Tron LE beside my http://www.usbjig.com/tronminicab.html on the Flynn's plastic (I have a Flynn's sign mod, so the plastic is redundant anyway). Will update here as I progress.
I do not plan to sell this mod, but if it comes out like I think, I might be coerced into selling a DIY cabinet kit that will work with the electronics from the tinycircuits kit. It won't be *quite* as attractive as the usbjig minicab as they have a much more detailed control panel and use thinner and more "to scale" plastic for the construction, but I honestly think it'll be close enough that even side by side it'll look pretty good. The video is the key anyway. I can do detailed instructions on how to make that part happen. Or I might be able to be coerced into reselling the Tinycircuits kit pre-programmed, we'll see.
--Donnie