salamanders can move and shot, they use the fire template that usually shot more models, if they make even a single wound the wounded unit needs a panic test, they have flaming attacks. Finally, they're the only "flame thrower" in the lizardmen army. The only benefit of razordon is their stand and shoot, but this increase the possibility of misfire, and we already have enough models who can shot at the enemy. They could be nice, but they cost like salamanders, and salamanders are epic. Personally, i don't like the randomness of the number of shots.