I had the PC-FX back in 2005. I kept it around for about 6 months, when I needed to drop some system weight, it was first to go. I would need one back in my collection about as much as I'd need a Jaguar or a CDi. I couldn't imagine someone having one and playing enough to make keeping it around worthwhile.
Not that I didn't have some fun playing it. I had Sparkling Feather, Power League FX, and a few others that really were pretty entertaining. I heard alot of hype behind battle heat and Team Innocent, so when I got on those and found that the games are less than "great" I decided to dump.
The other fun games are far too crazy priced and hard to find. I'm not saying that I'll never own one again, but its not too likely.
watch me eat my words.