For example, the Simba - Future King card is different from the Simba - Returned King card, so a player could have four of each card in their deck
While enchantments are nearly as likely to be put into the graveyard as creatures or artifacts, there are plenty of good enchantments that sacrifice for good effect Aura of Silence, Pursuit of Knowledge, Seal of Cleansing, Soul Snare and thats just in white
If so, where would you put them
They're more useful in this format than most, simply because Commander decks are so large, and each of their 99 cards (excepting basic lands) must be different
It practically gives you a level of deck control that feels like cheating when used correctly
Up till now, however, Bennie Brecks only saw one printing in a Streets of New Capenna Commander deck, making its scarcity become far outweighed by its demand