I thought the Jaguar was pretty nice when it first was released. Seeing the controllers for the first time I though back to the Atari 5200 controllers and it's overlays. Though it reminded me of the 5200, and these controllers were better made, I didn't care much for them.
Around the time of 386 computers, and especially when 486/Pentium became available, I got into FPS games.
Seeing Doom and Wolfenstein 3D on a Jaguar looked about as good as the PC. Though, the problem I had with the system involved the controllers. Once you experience FPS games with keyboard and mouse, and a mess of keys and commands you can group together pretty much however you want, any other way of playing FPS games seems inadequate. Still, for folks who didn't have access to those types of computers, the Jaguar ports were probably the best-looking way to play them.
Jaguar had some decent games from the start, I was a bit impressed with DOOM, Wolfenstein 3D, Tempest 2000. If they had kept going with games/ports of that quality, it would have probably stuck around a bit longer.