Objectives appear on "Explored" squares like Hack, Bits and Swarm.

Too intoxicated to give a full run down... but basically you can "Whistle Dixie" in a full group after exploring the last square from a level 1 group to complete Maze but go all the way to MQ just whistling for that group... the only other objectives you may NOT be able to complete is 4 corners and Mirror Maze.

And I hate "Whistle"

This is already posible, u just need to have all the prerequisits to make it happen.

This man is correct

yes and no. its possible if it was already an active objective and you have explored enough of a map that is large enough to have spawned it.

Objectives possible to spawn while whistling if you have explored enough of the cata and have all the prereqs
Bits and Pieces
Hack the horde
Stop the seven shamans
Slash the swarm
Elemental education (this one is an assumption as i have not done it)

The reason Shamans and EE can spawn is because they are not Evil Presences.

Yeah that's what I said , there's not a no in there I just didnt point out what quests lol
Elemental Education is EP's so they cannot spawn in whistle.