I love playing the gas man myself. I absolutely agree that the gas damage can feel very underwhelming, especially when most meta legends have movement abilities allowing them to move through the gas with little consequence. Old school caustic was not to be trifled with. I don’t know if a rework is absolutely necessary but here are my thoughts.
• first and foremost the gun reload needs to be remapped similar to rampart so you can reload while taking cover behind a gas can.
• secondly caustic’s level up perks are next to useless. Throwing cans farther goes against a defensive play style. Upgrade to nox vision is almost unnoticeable as the nox vision itself is a ridiculously sad passive when compared to other passive perks. The 50% increase in ultimate size feels weak when it takes so long for the nade to go off when hitting the ground. And the gain of health in gas is laughable.
I think caustic could be feared again if his level up perks were actually applicable to the game.
potential perks that fit with mad scientist persona: custom toxin choices
• nox gas blurs or blinds vision like Bangalore or Gibraltar or Catalyst ult
• movement speed penalty persists even after leaving gas
• option for two or three smaller gas nades instead of one big one.
• nox gas can be ignited with a thermite nade for fun explosive burst damage.