It appears that Hypertherm also has that feature but they call it grate cutting mode instead of auto refire. Both say it does reduce consumable life, but neither say how much. It just causes the machine to switch back to pilot arc mode when a void is encountered. It sounds like not that hard of a feature to add to a machine. Just a change in the way the transfer works. Maybe it is something you can modify? There are some threads about it on CNCzone.
Long arc, short arc, heliarc and in-the-dark!