URL

https://www.curseforge.com/minecraft/mc-mods/improved-mobs

Why would you like the mod added?

Because when people get OP Armor from some modded drop, and zombies and skeletons are no longer a threat anymore.
This mod aims to fix that, by introducing some new features and difficulty mechanics. Also can be configured to not be completely overwhelming.

Now, now. This is a expert/kitchen sink pack, not a apocalypse pack

Looks like a cool mod, but it doesn't really fit tbh.