The slayer is the only essentials class which is basic. That's the one who's mainly just walking around making attacks, but even he has some complexities in play.
Not only do the Thief and Knight work well, they do add a lot to battlefield.
The thief and his movement tricks influences enemy positioning just by existing. A trick to get CA against isolated foes doesn't work if the party group up, but a trick that hurts people that group up does work, not to mention a controller nuking them. A thief who has to use a shifting power to escape being flanked also looses on other opportunities. So all in all, the Theif influences combat like a game of chess (or perhaps cat and mouse).
The Knight is different, but still brings an element of chess to the board. Unlike every other defender, the Knight only has to stand somewhere to influence enemy movements. You might not want to move next to a Fighter, but he can't mark everyone, a Knight can, does and responds with his OA's not a single use Immediate Interupt. Moving adjacent to a Knight is a major consideration for an enemy, so if the knight is standing in a spot where their aura covers the people he wants to defend, the enemy has to risk a lot by daring to move to those squares.
So their play style is actually quite complex. They may not be exciting for others who may not be involved with the mindgames these new classes bring to the table, but for the players they can be a really engaging class to play.
Not only do the Thief and Knight work well, they do add a lot to battlefield.
The thief and his movement tricks influences enemy positioning just by existing. A trick to get CA against isolated foes doesn't work if the party group up, but a trick that hurts people that group up does work, not to mention a controller nuking them. A thief who has to use a shifting power to escape being flanked also looses on other opportunities. So all in all, the Theif influences combat like a game of chess (or perhaps cat and mouse).
The Knight is different, but still brings an element of chess to the board. Unlike every other defender, the Knight only has to stand somewhere to influence enemy movements. You might not want to move next to a Fighter, but he can't mark everyone, a Knight can, does and responds with his OA's not a single use Immediate Interupt. Moving adjacent to a Knight is a major consideration for an enemy, so if the knight is standing in a spot where their aura covers the people he wants to defend, the enemy has to risk a lot by daring to move to those squares.
So their play style is actually quite complex. They may not be exciting for others who may not be involved with the mindgames these new classes bring to the table, but for the players they can be a really engaging class to play.