Sims 4: SuperHeroes and Villains Ideas....comics and nerdy stuff

They still have to stick to the rating. For that Reason, I doubt the devs would ever replace the Tom and Jerry dust cloud with actual fighting animations. Mods can do that because mods don't have to restrict themselves to the rating.
There are mods that add drugs, violence, explicit sex, and all that in a very detailed manner. Wicked Whims being the most notable example of a Mod that does something the Devs could never, ever do. Not because they lack the skill or the tools, but because even suggesting it could get them fired.