https://game.nownews.com/news/20190918/3238631/ Google translate does an ok job of getting the information across.
Article has alot of photos of the Red Sharp C1 / Sampo C1jr from angles I have not seen before.
I really wish my silver one had the AV inputs.
You can probably add the AV inputs in with relative ease
There are indeed - I think FCgamer did a post somewhere on these, I have a Baseball (or Pinball) I think in my collection somewhere. Makes sense as the Taiwanese Famicom saw an official release.