Someone is missing the point here. Ransack isn't worth it in any quest. Comparing ransack with traps just shows that you are not really running quests with the purpose of speedy completions for maximum XP/minute.
In a discussion about how a player hates a particular character class the objective is to get the pain over with as quickly as possible. That means hurry up and finish, get the XP, move on.
Speed running for XP does not include ransack, it does not include trapping bonuses. The number of quests that do include trapping bonuses will depend somewhat on what your particular list of quests happens to be. But, for me, that is 6 quests total on the old list pre U19.
Post U19 it will probably drop to 4 quests due to the way the repetition penalties now work.
You can always find quests where you can get the trapping bonus. But doing so feeds right back into my main objection -- running those quests is almost always taking you away from the primary mission of XP/minute.
Here a while back Turbine changed the random drops out of breakables. Any idea why they did that? Had something to do with the fact that there are all these breakables in quests but nobody takes the time to break them. If you've paid really close attention when the change was first made the drop rates were particularly high. Now, not so much so (although the loot is still, usually, better than it was).
Now, why do you think auto spot and fast search/disable was added? It is because everyone understands that nobody bothers to disable traps. Turbine's thinking is that if they make it faster maybe they can con people into actually using the skill.
And, TBH, in most situations that is fine. Just not in this situation where the OP asks for a paladin past life in the least painful way. That least painful way is to go 9 monk/11 paladin and TR. The faster he gets 9 monk the faster he gets thru the 11 paladin. And that means the faster he can TR.