I'm hella late. Wouldn't it be theoretically possible to make a 3DS Capture mod using the top screen's ribbon cable then? Or even more just make a replica of the Katsukitty board? The second option apparently isn't all that special it was more so the proprietary software that did all the real work.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi