I found a modded survival SMP that just launched a brand new world so everyone is starting from day one. It has over 120 mods and it feels more like chill survival than constant chaos.
There is a live web map so you can look at the world and see builds from your browser. Bases can be protected with a claim system so you do not have to stress about griefing. There is also a server wide ranking system and an economy.
The world gen is custom and it uses Regions Unexplored and Nullscape so the terrain looks huge with continents islands and big landscapes. Exploration is a big deal too with more structures like better dungeons strongholds and mineshafts plus extra mobs and Ice and Fire creatures.
If you like tech you can build machines with Create and Steam n Rails or go for automation with Industrial Foregoing. Survival stuff is deeper with more food and fishing and animals. Storage and quality of life is stacked too with backpacks storage systems waystones JEI and simple voice chat.
Building is also a big part of it with lots of decoration mods like Macaws Another Furniture and Handcrafted. The vibe is relaxed and more about building exploring and hanging out.
