Event announcements
Every hour there's a chance of a server event starting. There would be a global announcement on the server "Enderdragon event starting in 1 hour!" People would gather around the event NPC.
Event NPC
This guy gives you more information about the next event and such. Everyone within a X block radius of him will be entering the event when the countdown is over.
Event types
So far I can only think of three kinds of events
- Stronghold: Includes a stronghold with random loot and monster spawners added to it as well as the possibility to go to the End
- Wither boss: Teleported to some kind of temporary world where you fight the wither boss
- Auctions: see below
Auctions
When you die during an event, your tools/weapons/armor would be automatically collected by the event NPC, who then hands it to the Auction guy NPC. There would be an auction house somewhere near the spawn where PvP is disabled. Auctions always start at 1 emerald and people can raise the price from there on simply by typing "x emeralds!" in chat if you're within a radius of the NPC.
If you have more ideas for fun events or things you'd like to be changed in this suggestion, please leave them below and we'll try to make this as awesome as possible