Alternative name for "monster effectiveness"

I understand why GGG introduced this new term to replace quant

More drop come with more challenging monsters so that only better build could handle the risk and be rewarded

I perfer this concept on loot than rarity give more currencies, but I felt an alternative term could be more immersive:

Monster Bounty

Higher bounty level means more dangerours monster that have better reward, it can range from e.g. 0-10. Each rare monster modifier can improve the bounty level but capped at 10.

A maximum bounty level also means there is soft cap for loot quantity, to prevent similar incident that happened in some time-travelling snake-twisting temples. i.e. protect the integrity of the economy.