Burn Damage Stacking
Well I agree that it’d be nice since duration stacking isn’t exactly fun/exciting lol. However if it were the case then it wouldn’t be any different than bleeding damage. Even poison is different since it has the %50 healing reduction. Burning is just meant to an extra “oomph” to attacks over time, whereas if you are playing earth attunement or something then you actually focus on stacking bleeding and not entirely on the attacks themselves.
It’s a trade off since burn starts out so high and you have to stack bleed to start to do noticeable damage.
“Please find my dear friends… Dead or Alive” -redmakoto