Small modpack with the potential for multiplayer cooperation.
Shops and claiming with Thut Essentials https://github.com/Thutmose/ThutEssentials/wiki
Multiplayer commands with Ma' Essentials, homes tpa back spawn kits etc.
Quark and Yung's Better Caves add many decorative blocks and depth.
Extra Golems and Useless Swords add enough new entities and weapons. Not a lot of overpowered junk, magic, machines or extra farming.
The Endergetic Expansion mod adds excitement to the End. The Nether is noticeably different in other ways, but not 1.16.
If you're not going to use 50+ mods, mobs, plants and spells, then why have them? Several of the best should be more than enough to keep things interesting.
It's simple and deep enough to play repeatedly in Survival gamemode.

