As i seem to not be able to get any further than what you documented (the world_login packet looks sooo huge), i took the time to note down some more ids:

<pre class="_prettyXprint">
C2S_WORLD_LOGIN_ACK = 4,
C2S_WORLD_LOGOUT = 5,
S2C_WORLD_LOGOUT_ACK = 6,
C2S_TRAVEL_WORLD = 7,
S2C_TRAVEL_WORLD_ACK = 8,
S2C_FORCED_LOGOUT = 9,
S2C_USER_ON_LOGIN = 10,
S2C_USER_ON_LOGOUT = 11,
S2C_USER_LEVELUP = 12,
S2C_USER_SET_CLASS = 13,
//nothing 14-16
S2C_PLAYER_ADD = 17,
S2C_NPC_ADD = 18,
S2C_PET_ADD = 19,
//nothing 20
S2C_LEVELOBJECT_REMOVE = 21,
S2C_GAME_ACTOR_ADD = 22,
S2C_INTERACTIVELEVELELEMENT_ADD = 23,
S2C_GAME_ACTOR_MOVE = 24,
S2C_GAME_INFO_ADD = 25,
S2C_GAME_INFO_REMOVE = 26,
S2C_CS_LOGIN = 27,
C2S_CS_CREATE_CHARACTER = 28,
S2C_CS_CREATE_CHARACTER_ACK = 29,
C2S_CS_DELETE_CHARACTER = 30,
S2C_CS_DELETE_CHARACTER_ACK = 31,
C2S_CS_SELECT_CHARACTER = 32,
S2C_CS_SELECT_CHARACTER_ACK = 33,
S2C_BASE_PAWN_REMOVE = 34,
S2R_PLAYERPAWN_MOVE = 35,
S2R_GAME_PLAYERPAWN_UPDATEROTATION = 36</pre>