I was surprised to see hardly anyone has talked about this on here. After seeing countless posts of people having issues in the NESRGB thread, it reminded me of this thing

More info here. Some people seem to know of Bakutendo, but not this thing
https://bakutendo.net/blog-entry-463.html
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On the same site that sells that Famicom board, our own fella Mike Moffitt has been quietly selling a nice SNES 3-chip mod board
https://mikejmoffitt.com/pages/shvc-rgb/index.html

It was inspired by a the old thread on here about sharp digital output for the 3chips. Here's a link to the board, I believe it should be available to buy in the USA/West *someday*...
https://www.kadenken.com/view/item/000000001606