currently electric DOT is essentially the same as the acid DOT but worse since it didnt have the slow down meanwhile fire DOT deals 2 per tick instead of 1 meaning, doubling the damage
why not make electric DOT an aoe damage over time like every tick of electric damage will chain to 2-3 nearby enemy this way electric DOT are more aoe focus while fire DOT is more single target focus like for bosses or the horsemen
the only interaction with the puddles is the acid puddle, causing an explosion when A) hit with a fire puddle or electric puddle or B) an enemy is on fire/electricuted
you can make the fire puddle and electric puddle synergise with each other, for example the electric and fire puddles will cause an emp explosion stunning nearby enemy or create a new blue fire status effect that deals 3 per tick instead of 2 or just simply make it explode and do damage nothing fancy, just keep it simple