I wish I could have decent output of a 3DS! I was looking into it and apparently it is really hard and one of the small setups modding them in Japan recently closed down!
Kind of serendipitous but I have been getting really into DSi, N3DS, and PSP hacking recently and just watched this video last night. Take a look. I think it will blow your mind. I didn't make this video, of course. "N3DSXL Hardware Mods Part II, Including Wireless Streaming" https://www.youtube.com/watch?v=f7lGI3yGzPQ
Wow that's really cool - thanks for sharing. This almost makes me want to get a new 3ds! I just have an old one. But I can't think of any other reason to upgrade. These days I'm living on the switch :)