I'm curious how difficult it would be to program the Super FX or SA-1 chip of a select few SNES carts into an FPGA based system. From my understanding, the designer of the SD2SNES multicart apparently never finished incorporating Super FX support, although it probably is possible on the FPGA used. However, he mentioned that SA-1 support probably wouldn't work on the hardware he had.
Anyway, if anyone can finish a fully-supported SNES FPGA core, it's gotta be Kevtris. I'm really excited about the prospect of this idea after having followed the Hidef NES for quite a while. I'd be willing to spend probably 250+ on this kind of a project, especially if it captures the 16-bit glory of SNES/Genesis in 1080p.
Also, it's annoying when some other uninformed people compare the Hidef NES or projects such as this with just using a Framemeister or upscaler/converter box. Clearly, they don't understand the loss incurred by analog video outputs.