Ideas for Caustic buffs (in addition to upcoming ones)

Here are my thoughts on Caustic:

I don't have a problem with him having a huge hitbox. I don't have a problem with him lacking mobility in a very mobility focused game. I don't have a problem with his passive and active abilities both being useless the vast majority of the time, as a result of the game being built around loot gathering and run-and-gun battles. I have a problem with the fact that even in the one scenario where is supposed to be good, he is still not a net benefit to your team. There are three reasons why this is the case:

1) The gas affects his own team

Caustics team doesn't take damage from his gas, but the damage is so low that doesn't matter. What matters is the debuff which affects both teams equally. What's worse, when an enemy team encounters a position being held by Caustics team, they will back out of the gas, and shoot into the room from OUTSIDE the gas. By contrast, Caustics team has to shoot out from INSIDE the gas. This makes it more a net loss for his team. Caustics team NEEDS to be immune to his gas. However, only the Caustic player himself should have immunity to an enemy Caustics gas.

2) The damage is too low

At the moment, each trap does trivial damage, but they all stack. This is bad design. In order to lock down an area, Caustic has to place traps at multiple entrances. This means his traps are spread out all over the place. The only way this can be a significant deterrent to a flanking opponent is if the damage of each individual trap is much higher and the debuff lasted longer. Personally I would increase trap damage by 3-5 times and take away the stacking property.

3) The radius is too small, the effect is too short

As it stands, players who run into Caustics traps just instantly back out of them, and instantly recover from the debuff. This means his traps can potentially prevent flanking in the right circumstances, but that shouldn't be the only thing Caustic does. His traps should be a serious threat to players who run into them. That means increasing trap radius or making the debuff last longer.

Quite frankly, even if the Devs implemented all of my suggestions including the X5 damage multiplier, Caustic would still only be a mid tier character at best. This is simply because his abilities are useless in every scenario except defensively holding a position. A character with a large hitbox and abilities that are completely useless the majority of the time needs to be absolutely amazing in the rare circumstances when he gets to use his abilities just to be even be a "meh" character overall.