Mousepads haven’t really advanced much for a long time, but it’s worth noting when a nice one like Razer’s Goliathus gets a little tweak. They’ve added a little edge reinforcement to the things so they don’t fray. I found that the greater danger to cloth mats after a long time is dirt and oil soaking in and making it overly reflective (not all sensors are good for it), but the fraying did happen to mine as well, and made it look cheap. Unforgivable!
The new mats come in two finishes and a number of sizes. Check ’em out here.