I voted yes if good. Normally I'd say the FX-sized user base is too small, but the FX wasn't just unpopular, it also has almost no good games....f*ck...almost no *games* at all.
Most people with a SNES would rather play Mario, but most people with an FX are dying to play anything. If it was a DX version of Mysterious Song or something of that quality I would finally buy an FX.