I really like the new defender tree. However I have one suggestion...
I think it makes a lot of sense for the Defend to get access to the swordsmen skill. Less than warrior? Sure. Make it high up the tree? Sure. Just give him Swordsmen 1 as an option.
Now that swords do less damage in general and on counterattack, it seems to nerf the weapon that makes the most sense for defenders. Warriors go on the attack, Defenders primarily take damage/occupy the enemy, so sword counterattacks are perfect for them. Upping their sword counterattack damage seems to make a lot of sense for them.
So, please consider adding Swordsman 1 to their tree somewhere.