This is an adult based survival server called Campbell SMP that is now in season 2. It feels like a long term world where people actually stick around and play together. You do not have to grind all day to stay here so it is nice if you just want to relax after school or work.
The server is semi vanilla but it has a bunch of server side upgrades. The world generation uses different plugins so the terrain looks really cool. There are changes to the nether and end and even the desert jungle temples and ocean monuments feel upgraded. The wither and ender dragon are tougher so bosses are not a joke.
There is a progression based armor and tool system. You cannot just jump into iron and diamond gear right away. You need to level skills first and then you unlock better materials. The owners explain the system more in their discord.
The community runs a lot of regular events and players vote on how things should be done. It is a player run style server instead of one person controlling everything. There is proximity voice chat so people can actually talk when they are close to each other in game.
They are still working on spawn and the nether hub and the dragon has not even been killed yet. It feels like a fresh season with everyone starting out together and building up the world from the beginning.

