@BigMacAttack8u Wouldn't it be cool to have greater customization?
Just like you can toggle the fire mode of weapons and toggle certain legend ability modes, imagine being able to toggle between several types of traps for Caustic. That way, you could keep enemies guessing.
Here are a few ideas:
Long-poison, heavy duty barrel. This requires much more work for enemies to destroy, but damage ramps up like currently, starting low and not posing much of a threat if you get out quickly.
Short but lethal barrel: This barrel's damage is roughly double the current peak, only requiring six seconds to down someone. At the same time, it has the same health as current barrels and only releases gas for those six seconds. It's not good for holding a building, but great for discouraging/punishing exploration.
Sticky barrels: Small size, stick to any surface. High initial burst damage (35-50 depending on if the effect from multiple explosions can stack), then low persistent damage, but very small AoE. Mainly good for surprise attacks.
Caustic grenade: Caustic specialty, a combination of a frag grenade and thermite. The explosion radius of a frag grenade but only applies a DoT to players caught in the blast. The DoT bypasses shields completely.
Actually, this may be a cool idea for a separate grenade type in the game.