I was looking on Video Game Central and found that they are going to sell a new model of the Super Nintendo which will play both SNES and NES games. I'm pretty sure that it's exclusive to VGC and they state that its Limited Edition. I don't know how limited edition it is, but they're taking pre-orders now which deliver on November 7 of this year. It says that it works with SNES contollers and accessories but I don't know what they're going to do, if anything, about making it compatible with NES controllers like Gyromite, Zapper, and Track Pad. Maybe they'll make an adapter, I don't know. I also don't know if it will be compatible with FC and SFC games but at least you will be able to use your converters to play them. At least one benift will be the fact that its a brand new system and should play cleaned/new games without any problem.
SNES Model 3