A unique event, such as SetPlayerTransform.
A useful tool, like the fillcan, or duplicator.
A new feature for builds, such as doors.
A well designed weapon, like Ephi's shotgun.
A quality game modification, such as RTB.
A minigame feature, like TDM.
But, not any of these:
A crappy event, such as setPlayerName (although V11 prevents usage of this)
A useless tool, like... well... Not sure.
A new spammy building feature, that isn't even actually new, such as the preset brick pack.
A terrible weapon, like... well just see the Weapons topic in the drama section.
A crappy game modification, such as ANY public RP(G) mod.