The Dirt Shack SMP is a vanilla-focused server with a bunch of custom stuff added in to keep it fresh and more fun. You still get that survival feel, but with extra features like custom biomes, custom structures, custom plugins, claims, economy, and a reworked fishing system.
There are also custom vehicles and factories you can mess around with too, so if you like building, progressing, and having a few extra systems to play with, there's plenty to do. It's meant to stay close to vanilla while still giving you more to work with than a plain survival world.
If you're looking for a chill SMP with survival, economy, and community-based gameplay, The Dirt Shack SMP is worth checking out. Hope to see you soon!