[Enhancement Request] Realistic shuffling of random enemies

Please correct me if I'm wrong, but the option to randomize enemies seems to just grab some random enemy from the pool of all enemies using a uniformly random distribution. This is neat, but it results in rare enemies like iron knuckles showing up just as often as common enemies like keese/guays (and nonexistent enemies like arwings).

Can you add an option to "shuffle" the enemies using the actual distribution of enemies? (and keep it deterministic via seeding)