So, you want a list of things that you could make for the community?
List:
Pack of modern default-ish weapons (assault rifles, snipers, shotguns)
Pack of medieval default-ish weapons (actual pirate ship that mounts cannons, Long sword, dagger)
Game mode where you defend your base from flying aliens by using laser guns, aliens drop bombs and shoot lasers
Game mode where you are in a tundra and the Eskimo team (with spears) defends from evil Santa Claus and elves
Vehicle pack that involves default tanks with different types of turrets
A fully scripted death run that uses custom traps like swinging hammers (vehicles)
A script that allows players to revive other players from corpses
A system of commands that allows events to be called from different player's brick groups
An item that brings up a client sided gui that lets a player select what weapon they want to replace the item with
An item that spawns a helicopter that auto pilots above a build so you can shoot a mini-gun/vulcan at the map
A script that generates a city that you can have a death match in
A fully functional text based event system
A way for players with full trust to use "player" events on other players
A grenade that splits into other grenades that explode on impact
A zombie that uses Port's A* implementation to walk around bricks and attack players
A script that allows players to have a "backpack" of items instead of a row of 5
A magic pack of items that allows adaptations to the items to create "custom" items per player
A script that lets servers communicate with each other and have cross-server events
good luck