I think that characters should be able to be lit on fire from an electric railgun, plasma shots, or laser weapons (for the future PB?). The 3 different burners would be at different damage levels
Stats for the burning would depend on the weapon used.
~ x = 100
Electric
-e.g. 'x' damage
-5% chance for extra '1/2x' burn damage, over 5 sec
Plasma
-e.g. '1/4x' damage
-25% chance for extra '3/4x' burn/melt damage, over 2 sec
Laser
-e.g. '1/32x' damage, 8 attacks
-1% chance per attack for extra '1/4x' burn damage, over 2 sec