gets you ceramic coating.
is still out there waiting to be discovered.
As already mentioned, indoor storage will prolong burner life. I store my rig indoors, stood up on one end to minimize footprint in the brewery section of my home. It's definitely a conversation piece at that point
I've read of folks who swear oiling the burners after they've cooled down will inhibit rust. Obviously they burn the oil off next session before topping the burners with pots...