I don't think confusion should be changed to tick for more passive damage.
For most enemies, different conditions are already really redundant, many mobs in PvE don't heal themselves so applying Bleed or Poison or Burning is all the same. We don't need more of the same, it doesn't add to the gameplay value at all. The torment amplification is already weak enough to be ignorable for most purposes and the amount of builds that mainly rely on confusion can be counted on one or two fingers.
Confusion is a rather rare condition and if you include it in your build you should play around it. If you confuse a melee mob and then run away from it, it will be useless. If you stand in melee range and blind, block or dodge its attacks you might find that confusion hits for quite substantial amounts of damage in a short time.
True, it stands in a line of skills and effects that suffer from low enemy attack rates like retaliation in core Tyria but in expansion content it ticks quite frequently on many mobs and isn't weak by any means.
If you don't like the playstyle that comes with utilising it, simply play a build that focuses on other conditions, there are plenty alternatives.