I could think of a good use for this for use in a product that isn't satisfied.
The older SNESs had pretty terrible RGB video output due to internal issues in PPU2's analog output. If possible, a device that would emulate PPU2 (and PPU1 as well if needed) that plugs into the mostly unused expansion port (assuming the necessary signals are there) that outputs HDMI and RGB would be amazing, and I'm sure lots of people would buy it. It would completely remove the need for owning a 1CHIP and you would still get the compatibility of a 3CHIP (assuming the FPGA core(s) are accurate). I think having a way to get sharper video out of a real 3CHIP console would sell quite well, especially if it was a modless solution.
An example of a similar existing product would be the Turbo Chameleon 64, which, among other things, has an FPGA implementation of the VIC-II that can output VGA:
https://www.c64-wiki.com/wiki/Turbo_Chameleon_64
Being able to sell this product may give compensation, and jwdonal would be able to release source code for the FPGA core without harming sales (just be sure that verilog is somehow incompatible with the expansion port product so that Chinese clone manufacturers would have a difficult time reverse engineering it, like for example including a proprietary video scaler in the core for HDMI).
Of course, this would still require selling a product, which I'm not sure jwdonal wants to do, but it is always possible to partner with a manufacturer/retailer to get that product made, like how the SD2SNESs are made/sold.