Oh yes THC is a pain regarding loot. Fortunately it is quite rare to find a T1 or T2 mission that requires such a loot-scour. Unlike T3, where pretty much most of the missions on Expert ended up with a prolonged tour of going round the same places again and again and again, trying to find the last needed pieces of loot.
Any way, don't disregard Iron Man. Imagine the satisfaction when you finally complete a mission like Mage Towers or Soulforge![]()